This is my first visit to this fine repo so I have bundled all updates in a single pull request to make things easier for you to merge.

Close this pull request and delete the branch if you want me to start with single pull requests right away

Here's the executive summary:

Updates

Here's a list of all the updates bundled in this pull request. I've added some links to make it easier for you to find all the information you need.

Django	1.10.5	»	1.10.6	PyPI | Changelog | Homepage
pyOpenSSL	16.2.0	»	16.2.0	PyPI | Changelog | Docs
rsa	3.4.2	»	3.4.2	PyPI | Changelog | Homepage
configparser	3.5.0	»	3.5.0	PyPI | Homepage
pdfkit	0.6.1	»	0.6.1	PyPI | Homepage
lxml	3.7.3	»	3.7.3	PyPI | Changelog | Homepage

Changelogs

Django 1.10.5 -> 1.10.6

1.10.6

===========================

March 1, 2017

Django 1.10.6 fixes several bugs in 1.10.5.

Bugfixes

• Fixed ClearableFileInput’s "Clear" checkbox on model form fields where
  the model field has a default (:ticket:27805).

• Fixed RequestDataTooBig and TooManyFieldsSent exceptions crashing
  rather than generating a bad request response (:ticket:27820).

• Fixed a crash on Oracle and PostgreSQL when subtracting DurationField
  or IntegerField from DateField (:ticket:27828).

• Fixed query expression date subtraction accuracy on PostgreSQL for
  differences larger than a month (:ticket:27856).

• Fixed a GDALException raised by GDALClose on GDAL ≥ 2.0
  (:ticket:27479).

===========================

pyOpenSSL -> 16.2.0

16.2.0

---

Backward-incompatible changes:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

none

Deprecations:
^^^^^^^^^^^^^

none

Changes:
^^^^^^^^

• Fixed compatibility errors with OpenSSL 1.1.0.
• Fixed an issue that caused failures with subinterpreters and embedded Pythons.
  552 <https://github.com/pyca/pyopenssl/pull/552>_

---

16.1.0

---

Backward-incompatible changes:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

none

Deprecations:
^^^^^^^^^^^^^

• Dropped support for OpenSSL 0.9.8.

Changes:
^^^^^^^^

• Fix memory leak in OpenSSL.crypto.dump_privatekey() with FILETYPE_TEXT.
  496 <https://github.com/pyca/pyopenssl/pull/496>_
• Enable use of CRL (and more) in verify context.
  483 <https://github.com/pyca/pyopenssl/pull/483>_
• OpenSSL.crypto.PKey can now be constructed from cryptography objects and also exported as such.
  439 <https://github.com/pyca/pyopenssl/pull/439>_
• Support newer versions of cryptography which use opaque structs for OpenSSL 1.1.0 compatibility.

---

16.0.0

---

This is the first release under full stewardship of PyCA.
We have made many changes to make local development more pleasing.
The test suite now passes both on Linux and OS X with OpenSSL 0.9.8, 1.0.1, and 1.0.2.
It has been moved to pytest <https://pytest.org/>, all CI test runs are part of tox <https://testrun.org/tox/> and the source code has been made fully flake8 <https://flake8.readthedocs.io/>_ compliant.

We hope to have lowered the barrier for contributions significantly but are open to hear about any remaining frustrations.

Backward-incompatible changes:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• Python 3.2 support has been dropped.
  It never had significant real world usage and has been dropped by our main dependency cryptography.
  Affected users should upgrade to Python 3.3 or later.

Deprecations:
^^^^^^^^^^^^^

• The support for EGD has been removed.
  The only affected function OpenSSL.rand.egd() now uses os.urandom() to seed the internal PRNG instead.
  Please see pyca/cryptography1636 <https://github.com/pyca/cryptography/pull/1636>_ for more background information on this decision.
  In accordance with our backward compatibility policy OpenSSL.rand.egd() will be removed no sooner than a year from the release of 16.0.0.

Please note that you should use urandom <https://sockpuppet.org/blog/2014/02/25/safely-generate-random-numbers/>_ for all your secure random number needs.

• Python 2.6 support has been deprecated.
  Our main dependency cryptography deprecated 2.6 in version 0.9 (2015-05-14) with no time table for actually dropping it.
  pyOpenSSL will drop Python 2.6 support once cryptography does.

Changes:
^^^^^^^^

• Fixed OpenSSL.SSL.Context.set_session_id, OpenSSL.SSL.Connection.renegotiate, OpenSSL.SSL.Connection.renegotiate_pending, and OpenSSL.SSL.Context.load_client_ca.
  They were lacking an implementation since 0.14.
  422 <https://github.com/pyca/pyopenssl/pull/422>_
• Fixed segmentation fault when using keys larger than 4096-bit to sign data.
  428 <https://github.com/pyca/pyopenssl/pull/428>_
• Fixed AttributeError when OpenSSL.SSL.Connection.get_app_data() was called before setting any app data.
  304 <https://github.com/pyca/pyopenssl/pull/304>_
• Added OpenSSL.crypto.dump_publickey() to dump OpenSSL.crypto.PKey objects that represent public keys, and OpenSSL.crypto.load_publickey() to load such objects from serialized representations.
  382 <https://github.com/pyca/pyopenssl/pull/382>_
• Added OpenSSL.crypto.dump_crl() to dump a certificate revocation list out to a string buffer.
  368 <https://github.com/pyca/pyopenssl/pull/368>_
• Added OpenSSL.SSL.Connection.get_state_string() using the OpenSSL binding state_string_long.
  358 <https://github.com/pyca/pyopenssl/pull/358>_
• Added support for the socket.MSG_PEEK flag to OpenSSL.SSL.Connection.recv() and OpenSSL.SSL.Connection.recv_into().
  294 <https://github.com/pyca/pyopenssl/pull/294>_
• Added OpenSSL.SSL.Connection.get_protocol_version() and OpenSSL.SSL.Connection.get_protocol_version_name().
  244 <https://github.com/pyca/pyopenssl/pull/244>_
• Switched to utf8string mask by default.
  OpenSSL formerly defaulted to a T61String if there were UTF-8 characters present.
  This was changed to default to UTF8String in the config around 2005, but the actual code didn't change it until late last year.
  This will default us to the setting that actually works.
  To revert this you can call OpenSSL.crypto._lib.ASN1_STRING_set_default_mask_asc(b"default").
  234 <https://github.com/pyca/pyopenssl/pull/234>_

---

Older Changelog Entries

The changes from before release 16.0.0 are preserved in the repository <https://github.com/pyca/pyopenssl/blob/master/doc/ChangeLog_old.txt>_.

rsa -> 3.4.2

3.4.2

---

• Fixed dates in CHANGELOG.txt

3.4.1

---

• Included tests/private.pem in MANIFEST.in
• Included README.md and CHANGELOG.txt in MANIFEST.in

3.4

---

• Moved development to Github: https://github.com/sybrenstuvel/python-rsa
• Solved side-channel vulnerability by implementing blinding, fixes 19
• Deprecated the VARBLOCK format and rsa.bigfile module due to security issues, see
  Vulnerability in bigfile.py sybrenstuvel/python-rsa#13
• Integration with Travis-CI [1], Coveralls [2] and Code Climate [3]
• Deprecated the old rsa._version133 and rsa._version200 submodules, they will be
  completely removed in version 4.0.
• Add an 'exponent' argument to key.newkeys()
• Switched from Solovay-Strassen to Miller-Rabin primality testing, to
  comply with NIST FIPS 186-4 [4] as probabilistic primality test
  (Appendix C, subsection C.3):
• Fixed bugs 12, 14, 27, 30, 49

[1] https://travis-ci.org/sybrenstuvel/python-rsa
[2] https://coveralls.io/github/sybrenstuvel/python-rsa
[3] https://codeclimate.com/github/sybrenstuvel/python-rsa
[4] http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf

3.3

---

• Thanks to Filippo Valsorda: Fix BB'06 attack in verify() by
  switching from parsing to comparison. See [1] for more information.
• Simplified Tox configuration and dropped Python 3.2 support. The
  coverage package uses a u'' prefix, which was reintroduced in 3.3
  for ease of porting.

[1] https://blog.filippo.io/bleichenbacher-06-signature-forgery-in-python-rsa/

3.2.3

---

• Added character encoding markers for Python 2.x

3.2.1

---

• Added per-file licenses
• Added support for wheel packages
• Made example code more consistent and up to date with Python 3.4

3.2

---

• Mentioned support for Python 3 in setup.py

3.1.4

---

• Fixed some bugs

3.1.3

---

• Dropped support for Python 2.5

3.1.2

---

• Added Python 3.3 to the test environment.
• Removed dependency on Distribute
• Added support for loading public keys from OpenSSL

3.1.1

---

• Fixed doctests for Python 2.7
• Removed obsolete unittest so all tests run fine on Python 3.2

3.1

---

• Big, big credits to Yesudeep Mangalapilly for all the changes listed
  below!
• Added ability to generate keys on multiple cores simultaneously.
• Massive speedup
• Partial Python 3.2 compatibility (core functionality works, but
  saving or loading keys doesn't, for that the pyasn1 package needs to
  be ported to Python 3 first)
• Lots of bug fixes

3.0.1

---

• Removed unused import of abc module

3.0

---

• Changed the meaning of the keysize to mean the size of n rather than
  the size of both p and q. This is the common interpretation of
  RSA keysize. To get the old behaviour, double the keysize when generating a
  new key.

• Added a lot of doctests

• Added random-padded encryption and decryption using PKCS1 version 1.5

• Added hash-based signatures and verification using PKCS1v1.5

• Modeling private and public key as real objects rather than dicts.

• Support for saving and loading keys as PEM and DER files.

• Ability to extract a public key from a private key (PEM+DER)

2.0

---

• Security improvements by Barry Mead.

lxml -> 3.7.3

3.7.3

==================

Bugs fixed

• GH218 was ineffective in Python 3.

• GH222: lxml.html.submit_form() failed in Python 3.
  Patch by Jakub Wilk.

3.7.2

==================

• GH220: xmlfile allows switching output methods at an element level.
  Patch by Burak Arslan.

Bugs fixed

• Work around installation problems in recent Python 2.7 versions
  due to FTP download failures.

• GH219: xmlfile.element() was not properly quoting attribute values.
  Patch by Burak Arslan.

• GH218: xmlfile.element() was not properly escaping text content of
  script/style tags. Patch by Burak Arslan.

3.7.1

==================

• No source changes, issued only to solve problems with the
  binary packages released for 3.7.0.

3.7.0

==================

Features added

• GH217: XMLSyntaxError now behaves more like its SyntaxError
  baseclass. Patch by Philipp A.

• GH216: HTMLParser() now supports the same collect_ids parameter
  as XMLParser(). Patch by Burak Arslan.

• GH210: Allow specifying a serialisation method in xmlfile.write().
  Patch by Burak Arslan.

• GH203: New option default_doctype in HTMLParser that allows
  disabling the automatic doctype creation. Patch by Shadab Zafar.

• GH201: Calling the method .set('attrname') without value argument
  (or None) on HTML elements creates an attribute without value that
  serialises like <div attrname></div>. Patch by Daniel Holth.

• GH197: Ignore form input fields in form_values() when they are
  marked as disabled in HTML. Patch by Kristian Klemon.

Bugs fixed

• GH206: File name and line number were missing from XSLT error messages.
  Patch by Marcus Brinkmann.

Other changes

• Log entries no longer allow anything but plain string objects as message text
  and file name.

• zlib is included in the list of statically built libraries.

3.6.4

==================

• GH204, LP1614693: build fix for MacOS-X.

3.6.3

==================

• LP1614603: change linker flags to build multi-linux wheels

3.6.2

==================

• LP1614603: release without source changes to provide cleanly built Linux wheels

3.6.1

==================

Features added

• GH180: Separate option inline_style for Cleaner that only removes style
  attributes instead of all styles. Patch by Christian Pedersen.

• GH196: Windows build support for Python 3.5. Contribution by Maximilian Hils.

Bugs fixed

• GH199: Exclude file fields from FormElement.form_values (as browsers do).
  Patch by Tomas Divis.

• GH198, LP1568167: Try to provide base URL from Resolver.resolve_string().
  Patch by Michael van Tellingen.

• GH191: More accurate float serialisation in objectify.FloatElement.
  Patch by Holger Joukl.

• LP1551797: Repair XSLT error logging. Patch by Marcus Brinkmann.

3.6.0

==================

Features added

• GH187: Now supports (only) version 5.x and later of PyPy.
  Patch by Armin Rigo.

• GH181: Direct support for .rnc files in RelaxNG() if rnc2rng
  is installed. Patch by Dirkjan Ochtman.

Bugs fixed

• GH189: Static builds honour FTP proxy configurations when downloading
  the external libs. Patch by Youhei Sakurai.

• GH186: Soupparser failed to process entities in Python 3.x.
  Patch by Duncan Morris.

• GH185: Rare encoding related TypeError on import was fixed.
  Patch by Petr Demin.

3.5.0

==================

Bugs fixed

• Unicode string results failed XPath queries in PyPy.

• LP1497051: HTML target parser failed to terminate on exceptions
  and continued parsing instead.

• Deprecated API usage in doctestcompare.

3.5.0b1

====================

Features added

• cleanup_namespaces() accepts a new argument keep_ns_prefixes
  that does not remove definitions of the provided prefix-namespace
  mapping from the tree.

• cleanup_namespaces() accepts a new argument top_nsmap that
  moves definitions of the provided prefix-namespace mapping to the
  top of the tree.

• LP1490451: Element objects gained a cssselect() method as
  known from lxml.html. Patch by Simon Sapin.

• API functions and methods behave and look more like Python functions,
  which allows introspection on them etc. One side effect to be aware of
  is that the functions now bind as methods when assigned to a class
  variable. A quick fix is to wrap them in staticmethod() (as for
  normal Python functions).

• ISO-Schematron support gained an option error_finder that allows
  passing a filter function for picking validation errors from reports.

• LP1243600: Elements in lxml.html gained a classes property
  that provides a set-like interface to the class attribute.
  Original patch by masklinn.

• LP1341964: The soupparser now handles DOCTYPE declarations, comments
  and processing instructions outside of the root element.
  Patch by Olli Pottonen.

• LP1421512: The docinfo of a tree was made editable to allow
  setting and removing the public ID and system ID of the DOCTYPE.
  Patch by Olli Pottonen.

• LP1442427: More work-arounds for quirks and bugs in pypy and pypy3.

• lxml.html.soupparser now uses BeautifulSoup version 4 instead
  of version 3 if available.

Bugs fixed

• Memory errors that occur during tree adaptations (e.g. moving subtrees
  to foreign documents) could leave the tree in a crash prone state.

• Calling process_children() in an XSLT extension element without
  an output_parent argument failed with a TypeError.
  Fix by Jens Tröger.

• GH162: Image data in HTML data URLs is considered safe and
  no longer removed by lxml.html.clean JavaScript cleaner.

• GH166: Static build could link libraries in wrong order.

• GH172: Rely a bit more on libxml2 for encoding detection rather than
  rolling our own in some cases. Patch by Olli Pottonen.

• GH159: Validity checks for names and string content were tightened
  to detect the use of illegal characters early. Patch by Olli Pottonen.

• LP1421921: Comments/PIs before the DOCTYPE declaration were not
  serialised. Patch by Olli Pottonen.

• LP659367: Some HTML DOCTYPE declarations were not serialised.
  Patch by Olli Pottonen.

• LP1238503: lxml.doctestcompare is now consistent with stdlib's doctest
  in how it uses + and - to refer to unexpected and missing output.

• Empty prefixes are explicitly rejected when a namespace mapping is used
  with ElementPath to avoid hiding bugs in user code.

• Several problems with PyPy were fixed by switching to Cython 0.23.

3.4.4

==================

Bugs fixed

• An ElementTree compatibility test added in lxml 3.4.3 that failed in
  Python 3.4+ was removed again.

3.4.3

==================

Bugs fixed

• Expression cache in ElementPath was ignored. Fix by Changaco.

• LP1426868: Passing a default namespace and a prefixed namespace mapping
  as nsmap into xmlfile.element() raised a TypeError.

• LP1421927: DOCTYPE system URLs were incorrectly quoted when containing
  double quotes. Patch by Olli Pottonen.

• LP1419354: meta-redirect URLs were incorrectly processed by
  iterlinks() if preceded by whitespace.

3.4.2

==================

Bugs fixed

• LP1415907: Crash when creating an XMLSchema from a non-root element
  of an XML document.

• LP1369362: HTML cleaning failed when hitting processing instructions
  with pseudo-attributes.

• CDATA() wrapped content was rejected for tail text.

• CDATA sections were not serialised as tail text of the top-level element.

3.4.1

==================

Features added

• New htmlfile HTML generator to accompany the incremental xmlfile
  serialisation API. Patch by Burak Arslan.

Bugs fixed

• lxml.sax.ElementTreeContentHandler did not initialise its superclass.

3.4.0

==================

Features added

• xmlfile(buffered=False) disables output buffering and flushes the
  content after each API operation (starting/ending element blocks or writes).
  A new method xf.flush() can alternatively be used to explicitly flush
  the output.

• lxml.html.document_fromstring has a new option ensure_head_body=True
  which will add an empty head and/or body element to the result document if
  missing.

• lxml.html.iterlinks now returns links inside meta refresh tags.

• New XMLParser option collect_ids=False to disable ID hash table
  creation. This can substantially speed up parsing of documents with many
  different IDs that are not used.

• The parser uses per-document hash tables for XML IDs. This reduces the
  load of the global parser dict and speeds up parsing for documents with
  many different IDs.

• ElementTree.getelementpath(element) returns a structural ElementPath
  expression for the given element, which can be used for lookups later.

• xmlfile() accepts a new argument close=True to close file(-like)
  objects after writing to them. Before, xmlfile() only closed the file
  if it had opened it internally.

• Allow "bytearray" type for ASCII text input.

Bugs fixed

Other changes

• LP400588: decoding errors have become hard errors even in recovery mode.
  Previously, they could lead to an internal tree representation in a mixed
  encoding state, which lead to very late errors or even silently incorrect
  behaviour during tree traversal or serialisation.

• Requires Python 2.6, 2.7, 3.2 or later. No longer supports
  Python 2.4, 2.5 and 3.1, use lxml 3.3.x for those.

• Requires libxml2 2.7.0 or later and libxslt 1.1.23 or later,
  use lxml 3.3.x with older versions.

3.3.6

==================

Bugs fixed

• Prevent tree cycle creation when adding Elements as siblings.

• LP1361948: crash when deallocating Element siblings without parent.

• LP1354652: crash when traversing internally loaded documents in XSLT
  extension functions.

3.3.5

==================

Bugs fixed

• HTML cleaning could fail to strip javascript links that mix control
  characters into the link scheme.

3.3.4

==================

Features added

• Source line numbers above 65535 are available on Elements when
  using libxml2 2.9 or later.

Bugs fixed

• lxml.html.fragment_fromstring() failed for bytes input in Py3.

Other changes

3.3.3

==================

Bugs fixed

• LP1287118: Crash when using Element subtypes with __slots__.

Other changes

• The internal classes _LogEntry and _Attrib can no longer be
  subclassed from Python code.

3.3.2

==================

Bugs fixed

• The properties resolvers and version, as well as the methods
  set_element_class_lookup() and makeelement(), were lost from
  iterparse objects in 3.3.0.

• LP1222132: instances of XMLSchema, Schematron and RelaxNG
  did not clear their local error_log before running a validation.

• LP1238500: lxml.doctestcompare mixed up "expected" and "actual" in
  attribute values.

• Some file I/O tests were failing in MS-Windows due to non-portable temp
  file usage. Initial patch by Gabi Davar.

• LP910014: duplicate IDs in a document were not reported by DTD validation.

• LP1185332: tostring(method="html") did not use HTML serialisation
  semantics for trailing tail text. Initial patch by Sylvain Viollon.

• LP1281139: .attrib value of Comments lost its mutation methods
  in 3.3.0. Even though it is empty and immutable, it should still
  provide the same interface as that returned for Elements.

3.3.1

==================

Features added

Bugs fixed

• LP1014290: HTML documents parsed with parser.feed() failed to find
  elements during tag iteration.

• LP1273709: Building in PyPy failed due to missing support for
  PyUnicode_Compare() and PyByteArray_*() in PyPy's C-API.

• LP1274413: Compilation in MSVC failed due to missing "stdint.h" standard
  header file.

• LP1274118: iterparse() failed to parse BOM prefixed files.

Other changes

3.3.0

==================

Features added

Bugs fixed

• The heuristic that distinguishes file paths from URLs was tightened
  to produce less false negatives.

Other changes

3.3.0beta5

=======================

Features added

• The PEP 393 unicode parsing support gained a fallback for wchar strings
  which might still be somewhat common on Windows systems.

Bugs fixed

• Several error handling problems were fixed throughout the code base that
  could previously lead to exceptions being silently swallowed or not
  properly reported.

• The C-API function appendChild() is now deprecated as it does not
  propagate exceptions (its return type is void). The new function
  appendChildToElement() was added as a safe replacement.

• Passing a string into fromstringlist() raises an exception instead of
  parsing the string character by character.

Other changes

• Document cleanup code was simplified using the new GC features in
  Cython 0.20.

3.3.0beta4

=======================

Features added

Bugs fixed

• The (empty) value returned by the attrib property of Entity and Comment
  objects was mutable.

• Element class lookup wasn't available for the new pull parsers or when using
  a custom parser target.

• Setting Element attributes on instantiation with both the attrib argument
  and keyword arguments could modify the mapping passed as attrib.

• LP1266171: DTDs instantiated from internal/external subsets (i.e. through
  the docinfo property) lost their attribute declarations.

Other changes

• Built with Cython 0.20pre (gitrev 012ae82eb) to prepare support for
  Python 3.4.

3.3.0beta3

=======================

Features added

• Unicode string parsing was optimised for Python 3.3 (PEP 393).

Bugs fixed

• HTML parsing of Unicode strings could misdecode the input on some platforms.

• Crash in xmlfile() when closing open elements out of order in an error case.

Other changes

3.3.0beta2

=======================

Features added

• iterparse() supports the recover option.

Bugs fixed

• Crash in iterparse() for HTML parsing.

• Crash in target parsing with attributes.

Other changes

• The safety check in the read-only tree implementation (e.g. used by
  PythonElementClassLookup) raises a more appropriate ReferenceError
  for illegal access after tree disposal instead of an AssertionError.
  This should only impact test code that specifically checks the original
  behaviour.

3.3.0beta1

=======================

Features added

• New option handle_failures in make_links_absolute() and
  resolve_base_href() (lxml.html) that enables ignoring or
  discarding links that fail to parse as URLs.

• New parser classes XMLPullParser and HTMLPullParser for
  incremental parsing, as implemented for ElementTree in Python 3.4.

• iterparse() enables recovery mode by default for HTML parsing
  (html=True).

Bugs fixed

• LP1255132: crash when trying to run validation over non-Element (e.g.
  comment or PI).

• Error messages in the log and in exception messages that originated
  from libxml2 could accidentally be picked up from preceding warnings
  instead of the actual error.

• The ElementMaker in lxml.objectify did not accept a dict as
  argument for adding attributes to the element it's building. This
  works as in lxml.builder now.

• LP1228881: repr(XSLTAccessControl) failed in Python 3.

• Raise ValueError when trying to append an Element to itself or
  to one of its own descendants, instead of running into an infinite
  loop.

• LP1206077: htmldiff discarded whitespace from the output.

• Compressed plain-text serialisation to file-like objects was broken.

• lxml.html.formfill: Fix textarea form filling.
  The textarea used to be cleared before the new content was set,
  which removed the name attribute.

Other changes

• Some basic API classes use freelists internally for faster
  instantiation. This can speed up some iterparse() scenarios,
  for example.

• iterparse() was rewritten to use the new *PullParser
  classes internally instead of being a parser itself.

3.2.5

==================

Features added

Bugs fixed

• Crash in xmlfile() when closing open elements out of order in an error case.

• Crash in target parsing with attributes.

• LP1255132: crash when trying to run validation over non-Element (e.g.
  comment or PI).

Other changes

3.2.4

==================

Features added

Bugs fixed

• Memory leak when creating an XPath evaluator in a thread.

• LP1228881: repr(XSLTAccessControl) failed in Python 3.

• Raise ValueError when trying to append an Element to itself or
  to one of its own descendants.

• LP1206077: htmldiff discarded whitespace from the output.

• Compressed plain-text serialisation to file-like objects was broken.

Other changes

3.2.3

==================

Bugs fixed

• Fix support for Python 2.4 which was lost in 3.2.2.

3.2.2

==================

Features added

Bugs fixed

• LP1185701: spurious XMLSyntaxError after finishing iterparse().

• Crash in lxml.objectify during xsi annotation.

Other changes

• Return values of user provided element class lookup methods are now
  validated against the type of the XML node they represent to prevent
  API class mismatches.

3.2.1

==================

Features added

• The methods apply_templates() and process_children() of XSLT
  extension elements have gained two new boolean options elements_only
  and remove_blank_text that discard either all strings or whitespace-only
  strings from the result list.

Bugs fixed

• When moving Elements to another tree, the namespace cleanup mechanism
  no longer drops namespace prefixes from attributes for which it finds
  a default namespace declaration, to prevent them from appearing as
  unnamespaced attributes after serialisation.

• Returning non-type objects from a custom class lookup method could lead
  to a crash.

• Instantiating and using subtypes of Comments and ProcessingInstructions
  crashed.

Other changes

3.2.0

==================

Features added

Bugs fixed

• LP690319: Leading whitespace could change the behaviour of the string
  parsing functions in lxml.html.

• LP599318: The string parsing functions in lxml.html are more robust
  in the face of uncommon HTML content like framesets or missing body tags.
  Patch by Stefan Seelmann.

• LP712941: I/O errors while trying to access files with paths that contain
  non-ASCII characters could raise UnicodeDecodeError instead of properly
  reporting the IOError.

• LP673205: Parsing from in-memory strings disabled network access in the
  default parser and made subsequent attempts to parse from a URL fail.

• LP971754: lxml.html.clean appends 'nofollow' to 'rel' attributes instead
  of overwriting the current value.

• LP715687: lxml.html.clean no longer discards scripts that are explicitly
  allowed by the user provided whitelist. Patch by Christine Koppelt.

Other changes

3.1.2

==================

Features added

Bugs fixed

• LP1136509: Passing attributes through the namespace-unaware API of
  the sax bridge (i.e. the handler.startElement() method) failed
  with a TypeError. Patch by Mike Bayer.

• LP1123074: Fix serialisation error in XSLT output when converting
  the result tree to a Unicode string.

• GH105: Replace illegal usage of xmlBufLength() in libxml2 2.9.0
  by properly exported API function xmlBufUse().

Other changes

3.1.1

==================

Features added

Bugs fixed

• LP1160386: Write access to lxml.html.FormElement.fields raised
  an AttributeError in Py3.

• Illegal memory access during cleanup in incremental xmlfile writer.

Other changes

• The externally useless class lxml.etree._BaseParser was removed
  from the module dict.

3.1.0

==================

Features added

• GH89: lxml.html.clean allows overriding the set of attributes that it
  considers 'safe'. Patch by Francis Devereux.

Bugs fixed

• LP1104370: copy.copy(el.attrib) raised an exception. It now returns
  a copy of the attributes as a plain Python dict.

• GH95: When used with namespace prefixes, the el.find*() methods
  always used the first namespace mapping that was provided for each
  path expression instead of using the one that was actually passed
  in for the current run.

• LP1092521, GH91: Fix undefined C symbol in Python runtimes compiled
  without threading support. Patch by Ulrich Seidl.

Other changes

3.1beta1

=====================

Features added

• New build-time option --with-unicode-strings for Python 2 that
  makes the API always return Unicode strings for names and text
  instead of byte strings for plain ASCII content.

• New incremental XML file writing API etree.xmlfile().

• E factory in lxml.objectify is callable to simplify the creation of
  tags with non-identifier names without having to resort to getattr().

Bugs fixed

• When starting from a non-namespaced element in lxml.objectify, searching
  for a child without explicitly specifying a namespace incorrectly found
  namespaced elements with the requested local name, instead of restricting
  the search to non-namespaced children.

• GH85: Deprecation warnings were fixed for Python 3.x.

• GH33: lxml.html.fromstring() failed to accept bytes input in Py3.

• LP1080792: Static build of libxml2 2.9.0 failed due to missing file.

Other changes

• The externally useless class _ObjectifyElementMakerCaller was
  removed from the module API of lxml.objectify.

• LP1075622: lxml.builder is faster for adding text to elements with
  many children. Patch by Anders Hammarquist.

3.0.2

==================

Features added

Bugs fixed

• Fix crash during interpreter shutdown by switching to Cython 0.17.3 for building.

Other changes

3.0.1

==================

Features added

Bugs fixed

• LP1065924: Element proxies could disappear during garbage collection
  in PyPy without proper cleanup.

• GH71: Failure to work with libxml2 2.6.x.

• LP1065139: static MacOS-X build failed in Py3.

Other changes

3.0

================

Features added

Bugs fixed

• End-of-file handling was incorrect in iterparse() when reading from
  a low-level C file stream and failed in libxml2 2.9.0 due to its
  improved consistency checks.

Other changes

• The build no longer uses Cython by default unless the generated C files
  are missing. To use Cython, pass the option "--with-cython". To ignore
  the fatal build error when Cython is required but not available (e.g. to
  run special setup.py commands that do not actually run a build), pass
  "--without-cython".

3.0beta1

=====================

Features added

• Python level access to (optional) libxml2 memory debugging features
  to simplify debugging of memory leaks etc.

Bugs fixed

• Fix a memory leak in XPath by switching to Cython 0.17.1.

• Some tests were adapted to work with PyPy.

Other changes

• The code was adapted to work with the upcoming libxml2 2.9.0 release.

3.0alpha2

======================

Features added

• The .iter() method of elements now accepts tag arguments like
  "{*}name" to search for elements with a given local name in any
  namespace. With this addition, all combinations of wildcards now work
  as expected:
  "{ns}name", "{}name", "{*}name", "{ns}*", "{}*"
  and "{*}*". Note that "name" is equivalent to "{}name",
  but "*" is "{*}*".
  The same change applies to the .getiterator(), .itersiblings(),
  .iterancestors(), .iterdescendants(), .iterchildren()
  and .itertext() methods;the strip_attributes(),
  strip_elements() and strip_tags() functions as well as the
  iterparse() class. Patch by Simon Sapin.

• C14N allows specifying the inclusive prefixes to be promoted
  to top-level during exclusive serialisation.

Bugs fixed

• Passing long Unicode strings into the feed() parser interface
  failed to read the entire string.

Other changes

3.0alpha1

======================

Features added

• Initial support for building in PyPy (through cpyext).

• DTD objects gained an API that allows read access to their
  declarations.

• xpathgrep.py gained support for parsing line-by-line (e.g.
  from grep output) and for surrounding the output with a new root
  tag.

• E-factory in lxml.builder accepts subtypes of known data
  types (such as string subtypes) when building elements around them.

• Tree iteration and iterparse() with a selective tag
  argument supports passing a set of tags. Tree nodes will be
  returned by the iterators if they match any of the tags.

Bugs fixed

• The .find*() methods in lxml.objectify no longer use XPath
  internally, which makes them faster in many cases (especially when
  short circuiting after a single or couple of elements) and fixes
  some behavioural differences compared to lxml.etree. Note that
  this means that they no longer support arbitrary XPath expressions
  but only the subset that the ElementPath language supports.
  The previous implementation was also redundant with the normal
  XPath support, which can be used as a replacement.

• el.find('*') could accidentally return a comment or processing
  instruction that happened to be in the wrong spot. (Same for the
  other .find*() methods.)

• The error logging is less intrusive and avoids a global setup where
  possible.

• Fixed undefined names in html5lib parser.

• xpathgrep.py did not work in Python 3.

• Element.attrib.update() did not accept an attrib of
  another Element as parameter.

• For subtypes of ElementBase that make the .text or .tail
  properties immutable (as in objectify, for example), inserting text
  when creating Elements through the E-Factory feature of the class
  constructor would fail with an exception, stating that the text
  cannot be modified.

Other changes

• The code base was overhauled to properly use 'const' where the API
  of libxml2 and libxslt requests it. This also has an impact on the
  public C-API of lxml itself, as defined in etreepublic.pxd, as
  well as the provided declarations in the lxml/includes/ directory.
  Code that uses these declarations may have to be adapted. On the
  plus side, this fixes several C compiler warnings, also for user
  code, thus making it easier to spot real problems again.

• The functionality of "lxml.cssselect" was moved into a separate PyPI
  package called "cssselect". To continue using it, you must install
  that package separately. The "lxml.cssselect" module is still
  available and provides the same interface, provided the "cssselect"
  package can be imported at runtime.

• Element attributes passed in as an attrib dict or as keyword
  arguments are now sorted by (namespaced) name before being created
  to make their order predictable for serialisation and iteration.
  Note that adding or deleting attributes afterwards does not take
  that order into account, i.e. setting a new attribute appends it
  after the existing ones.

• Several classes that are for internal use only were removed
  from the lxml.etree module dict:
  _InputDocument, _ResolverRegistry, _ResolverContext, _BaseContext, _ExsltRegExp, _IterparseContext, _TempStore, _ExceptionContext, __ContentOnlyElement, _AttribIterator, _NamespaceRegistry, _ClassNamespaceRegistry, _FunctionNamespaceRegistry, _XPathFunctionNamespaceRegistry, _ParserDictionaryContext, _FileReaderContext, _ParserContext, _PythonSaxParserTarget, _TargetParserContext, _ReadOnlyProxy, _ReadOnlyPIProxy, _ReadOnlyEntityProxy, _ReadOnlyElementProxy, _OpaqueNodeWrapper, _OpaqueDocumentWrapper, _ModifyContentOnlyProxy, _ModifyContentOnlyPIProxy, _ModifyContentOnlyEntityProxy, _AppendOnlyElementProxy, _SaxParserContext, _FilelikeWriter, _ParserSchemaValidationContext, _XPathContext, _XSLTResolverContext, _XSLTContext, _XSLTQuotedStringParam

• Several internal classes can no longer be inherited from:
  _InputDocument, _ResolverRegistry, _ExsltRegExp, _ElementUnicodeResult, _IterparseContext, _TempStore, _AttribIterator, _ClassNamespaceRegistry, _XPathFunctionNamespaceRegistry, _ParserDictionaryContext, _FileReaderContext, _PythonSaxParserTarget, _TargetParserContext, _ReadOnlyPIProxy, _ReadOnlyEntityProxy, _OpaqueDocumentWrapper, _ModifyContentOnlyPIProxy, _ModifyContentOnlyEntityProxy, _AppendOnlyElementProxy, _FilelikeWriter, _ParserSchemaValidationContext, _XPathContext, _XSLTResolverContext, _XSLTContext, _XSLTQuotedStringParam, _XSLTResultTree, _XSLTProcessingInstruction

2.3.6

==================

Features added

Bugs fixed

• Passing long Unicode strings into the feed() parser interface
  failed to read the entire string.

Other changes

2.3.5

==================

Features added

Bugs fixed

• Crash when merging text nodes in element.remove().

• Crash in sax/target parser when reporting empty doctype.

Other changes

2.3.4

==================

Features added

Bugs fixed

• Crash when building an nsmap (Element property) with empty
  namespace URIs.

• Crash due to race condition when errors (or user messages) occur
  during threaded XSLT processing.

• XSLT stylesheet compilation could ignore compilation errors.

Other changes

2.3.3

==================

Features added

• lxml.html.tostring() gained new serialisation options
  with_tail and doctype.

Bugs fixed

• Fixed a crash when using iterparse() for HTML parsing and
  requesting start events.

• Fixed parsing of more selectors in cssselect. Whitespace before
  pseudo-elements and pseudo-classes is significant as it is a
  descendant combinator.
  "E :pseudo" should parse the same as "E *:pseudo", not "E:pseudo".
  Patch by Simon Sapin.

• lxml.html.diff no longer raises an exception when hitting
  'img' tags without 'src' attribute.

Other changes

2.3.2

==================

Features added

• lxml.objectify.deannotate() has a new boolean option
  cleanup_namespaces to remove the objectify namespace
  declarations (and generally clean up the namespace declarations)
  after removing the type annotations.

• lxml.objectify gained its own SubElement() function as a
  copy of etree.SubElement to avoid an otherwise redundant import
  of lxml.etree on the user side.

Bugs fixed

• Fixed the "descendant" bug in cssselect a second time (after a first
  fix in lxml 2.3.1). The previous change resulted in a serious
  performance regression for the XPath based evaluation of the
  translated expression. Note that this breaks the usage of some of
  the generated XPath expressions as XSLT location paths that
  previously worked in 2.3.1.

• Fixed parsing of some selectors in cssselect. Whitespace after combinators
  ">", "+" and "~" is now correctly ignored. Previously it was parsed as
  a descendant combinator. For example, "div> .foo" was parsed the same as
  "div>* .foo" instead of "div>.foo". Patch by Simon Sapin.

Other changes

2.3.1

==================

Features added

• New option kill_tags in lxml.html.clean to remove specific
  tags and their content (i.e. their whole subtree).

• pi.get() and pi.attrib on processing instructions to parse
  pseudo-attributes from the text content of processing instructions.

• lxml.get_include() returns a list of include paths that can be
  used to compile external C code against lxml.etree. This is
  specifically required for statically linked lxml builds when code
  needs to compile against the exact same header file versions as lxml
  itself.

• Resolver.resolve_file() takes an additional option
  close_file that configures if the file(-like) object will be
  closed after reading or not. By default, the file will be closed,
  as the user is not expected to keep a reference to it.

Bugs fixed

• HTML cleaning didn't remove 'data:' links.

• The html5lib parser integration now uses the 'official'
  implementation in html5lib itself, which makes it work with newer
  releases of the library.

• In lxml.sax, endElementNS() could incorrectly reject a plain
  tag name when the corresponding start event inferred the same plain
  tag name to be in the default namespace.

• When an open file-like object is passed into parse() or
  iterparse(), the parser will no longer close it after use. This
  reverts a change in lxml 2.3 where all files would be closed. It is
  the users responsibility to properly close the file(-like) object,
  also in error cases.

• Assertion error in lxml.html.cleaner when discarding top-level elements.

• In lxml.cssselect, use the xpath 'A//B' (short for
  'A/descendant-or-self::node()/B') instead of 'A/descendant::B' for
  the css descendant selector ('A B'). This makes a few edge cases
  like "div *:last-child" consistent with the selector behavior in
  WebKit and Firefox, and makes more css expressions valid location
  paths (for use in xsl:template match).

• In lxml.html, non-selected <option> tags no longer show up in the
  collected form values.

• Adding/removing <option> values to/from a multiple select form
  field properly selects them and unselects them.

Other changes

• Static builds can specify the download directory with the
  --download-dir option.

2.3

================

Features added

• When looking for children, lxml.objectify takes '{}tag' as
  meaning an empty namespace, as opposed to the parent namespace.

Bugs fixed

• When finished reading from a file-like object, the parser
  immediately calls its .close() method.

• When finished parsing, iterparse() immediately closes the input
  file.

• Work-around for libxml2 bug that can leave the HTML parser in a
  non-functional state after parsing a severely broken document (fixed
  in libxml2 2.7.8).

• marque tag in HTML cleanup code is correctly named marquee.

Other changes

• Some public functions in the Cython-level C-API have more explicit
  return types.

2.3beta1

=====================

Features added

Bugs fixed

• Crash in newer libxml2 versions when moving elements between
  documents that had attributes on replaced XInclude nodes.

• XMLID() function was missing the optional parser and
  base_url parameters.

• Searching for wildcard tags in iterparse() was broken in Py3.

• lxml.html.open_in_browser() didn't work in Python 3 due to the
  use of os.tempnam. It now takes an optional 'encoding' parameter.

Other changes

2.3alpha2

======================

Features added

Bugs fixed

• Crash in XSLT when generating text-only result documents with a
  stylesheet created in a different thread.

Other changes

• repr() of Element objects shows the hex ID with leading 0x
  (following ElementTree 1.3).

2.3alpha1

======================

Features added

• Keyword argument namespaces in lxml.cssselect.CSSSelector()
  to pass a prefix-to-namespace mapping for the selector.

• New function lxml.etree.register_namespace(prefix, uri) that
  globally registers a namespace prefix for a namespace that newly
  created Elements in that namespace will use automatically. Follows
  ElementTree 1.3.

• Support 'unicode' string name as encoding parameter in
  tostring(), following ElementTree 1.3.

• Support 'c14n' serialisation method in ElementTree.write() and
  tostring(), following ElementTree 1.3.

• The ElementPath expression syntax (el.find*()) was extended to
  match the upcoming ElementTree 1.3 that will ship in the standard
  library of Python 3.2/2.7. This includes extended support for
  predicates as well as namespace prefixes (as known from XPath).

• During regular XPath evaluation, various ESXLT functions are
  available within their namespace when using libxslt 1.1.26 or later.

• Support passing a readily configured logger instance into
  PyErrorLog, instead of a logger name.

• On serialisation, the new doctype parameter can be used to
  override the DOCTYPE (internal subset) of the document.

• New parameter output_parent to XSLTExtension.apply_templates()
  to append the resulting content directly to an output element.

• XSLTExtension.process_children() to process the content of the
  XSLT extension element itself.

• ISO-Schematron support based on the de-facto Schematron reference
  'skeleton implementation'.

• XSLT objects now take XPath object as __call__ stylesheet
  parameters.

• Enable path caching in ElementPath (el.find*()) to avoid parsing
  overhead.

• Setting the value of a namespaced attribute always uses a prefixed
  namespace instead of the default namespace even if both declare the
  same namespace URI. This avoids serialisation problems when an
  attribute from a default namespace is set on an element from a
  different namespace.

• XSLT extension elements: support for XSLT context nodes other than
  elements: document root, comments, processing instructions.

• Support for strings (in addition to Elements) in node-sets returned
  by extension functions.

• Forms that lack an action attribute default to the base URL of
  the document on submit.

• XPath attribute result strings have an attrname property.

• Namespace URIs get validated against RFC 3986 at the API level
  (required by the XML namespace specification).

• Target parsers show their target object in the .target property
  (compatible with ElementTree).

Bugs fixed

• API is hardened against invalid proxy instances to prevent crashes
  due to incorrectly instantiated Element instances.

• Prevent crash when instantiating CommentBase and friends.

• Export ElementTree compatible XML parser class as
  XMLTreeBuilder, as it is called in ET 1.2.

• ObjectifiedDataElements in lxml.objectify were not hashable. They
  now use the hash value of the underlying Python value (string,
  number, etc.) to which they compare equal.

• Parsing broken fragments in lxml.html could fail if the fragment
  contained an orphaned closing '</div>' tag.

• Using XSLT extension elements around the root of the output document
  crashed.

• lxml.cssselect did not distinguish between x[attr="val"] and
  x [attr="val"] (with a space). The latter now matches the
  attribute independent of the element.

• Rewriting multiple links inside of HTML text content could end up
  replacing unrelated content as replacements could impact the
  reported position of subsequent matches. Modifications are now
  simplified by letting the iterlinks() generator in lxml.html
  return links in reversed order if they appear inside the same text
  node. Thus, replacements and link-internal modifications no longer
  change the position of links reported afterwards.

• The .value attribute of textarea elements in lxml.html did
  not represent the complete raw value (including child tags etc.). It
  now serialises the complete content on read and replaces the
  complete content by a string on write.

• Target parser didn't call .close() on the target object if
  parsing failed. Now it is guaranteed that .close() will be
  called after parsing, regardless of the outcome.

Other changes

• Official support for Python 3.1.2 and later.

• Static MS Windows builds can now download their dependencies
  themselves.

• Element.attrib no longer uses a cyclic reference back to its
  Element object. It therefore no longer requires the garbage
  collector to clean up.

• Static builds include libiconv, in addition to libxml2 and libxslt.

2.2.8

==================

Bugs fixed

• Crash in newer libxml2 versions when moving elements between
  documents that had attributes on replaced XInclude nodes.

• Import fix for urljoin in Python 3.1+.

2.2.7

==================

Bugs fixed

• Crash in XSLT when generating text-only result documents with a
  stylesheet created in a different thread.

2.2.6

==================

Bugs fixed

• Fixed several Python 3 regressions by building with Cython 0.11.3.

2.2.5

==================

Features added

• Support for running XSLT extension elements on the input root node
  (e.g. in a template matching on "/").

Bugs fixed

• Crash in XPath evaluation when reading smart strings from a document
  other than the original context document.

• Support recent versions of html5lib by not requiring its
  XHTMLParser in htmlparser.py anymore.

• Manually instantiating the custom element classes in
  lxml.objectify could crash.

• Invalid XML text characters were not rejected by the API when they
  appeared in unicode strings directly after non-ASCII characters.

• lxml.html.open_http_urllib() did not work in Python 3.

• The functions strip_tags() and strip_elements() in
  lxml.etree did not remove all occurrences of a tag in all cases.

• Crash in XSLT extension elements when the XSLT context node is not
  an element.

2.2.4

==================

Bugs fixed

• Static build of libxml2/libxslt was broken.

2.2.3

==================

Features added

Bugs fixed

• The resolve_entities option did not work in the incremental feed
  parser.

• Looking up and deleting attributes without a namespace could hit a
  namespaced attribute of the same name instead.

• Late errors during calls to SubElement() (e.g. attribute related
  ones) could leave a partially initialised element in the tree.

• Modifying trees that contain parsed entity references could result
  in an infinite loop.

• ObjectifiedElement.setattr created an empty-string child element when the
  attribute value was rejected as a non-unicode/non-ascii string

• Syntax errors in lxml.cssselect could result in misleading error
  messages.

• Invalid syntax in CSS expressions could lead to an infinite loop in
  the parser of lxml.cssselect.

• CSS special character escapes were not properly handled in
  lxml.cssselect.

• CSS Unicode escapes were not properly decoded in lxml.cssselect.

• Select options in HTML forms that had no explicit value
  attribute were not handled correctly. The HTML standard dictates
  that their value is defined by their text content. This is now
  supported by lxml.html.

• XPath raised a TypeError when finding CDATA sections. This is now
  fully supported.

• Calling help(lxml.objectify) didn't work at the prompt.

• The ElementMaker in lxml.objectify no longer defines the default
  namespaces when annotation is disabled.

• Feed parser failed to honour the 'recover' option on parse errors.

• Diverting the error logging to Python's logging system was broken.

Other changes

2.2.2

==================

Features added

• New helper functions strip_attributes(), strip_elements(),
  strip_tags() in lxml.etree to remove attributes/subtrees/tags
  from a subtree.

Bugs fixed

• Namespace cleanup on subtree insertions could result in missing
  namespace declarations (and potentially crashes) if the element
  defining a namespace was deleted and the namespace was not used by
  the top element of the inserted subtree but only in deeper subtrees.

• Raising an exception from a parser target callback didn't always
  terminate the parser.

• Only {true, false, 1, 0} are accepted as the lexical representation for
  BoolElement ({True, False, T, F, t, f} not any more), restoring lxml <= 2.0
  behaviour.

Other changes

2.2.1

==================

Features added

• Injecting default attributes into a document during XML Schema
  validation (also at parse time).

• Pass huge_tree parser option to disable parser security
  restrictions imposed by libxml2 2.7.

Bugs fixed

• The script for statically building libxml2 and libxslt didn't work
  in Py3.

• XMLSchema() also passes invalid schema documents on to libxml2
  for parsing (which could lead to a crash before release 2.6.24).

Other changes

2.2

================

Features added

• Support for standalone flag in XML declaration through
  tree.docinfo.standalone and by passing standalone=True/False
  on serialisation.

Bugs fixed

• Crash when parsing an XML Schema with external imports from a
  filename.

2.2beta4

=====================

Features added

• Support strings and instantiable Element classes as child arguments
  to the constructor of custom Element classes.

• GZip compression support for serialisation to files and file-like
  objects.

Bugs fixed

• Deep-copying an ElementTree copied neither its sibling PIs and
  comments nor its internal/external DTD subsets.

• Soupparser failed on broken attributes without values.

• Crash in XSLT when overwriting an already defined attribute using
  xsl:attribute.

• Crash bug in exception handling code under Python 3. This was due
  to a problem in Cython, not lxml itself.

• lxml.html.FormElement._name() failed for non top-level forms.

• TAG special attribute in constructor of custom Element classes
  was evaluated incorrectly.

Other changes

• Official support for Python 3.0.1.

• Element.findtext() now returns an empty string instead of None
  for Elements without text content.

2.2beta3

=====================

Features added

• XSLT.strparam() class method to wrap quoted string parameters
  that require escaping.

Bugs fixed

• Memory leak in XPath evaluators.

• Crash when parsing indented XML in one thread and merging it with
  other documents parsed in another thread.

• Setting the base attribute in lxml.objectify from a unicode
  string failed.

• Fixes following changes in Python 3.0.1.

• Minor fixes for Python 3.

Other changes

• The global error log (which is copied into the exception log) is now
  local to a thread, which fixes some race conditions.

• More robust error handling on serialisation.

2.2beta2

=====================

Bugs fixed

• Potential memory leak on exception handling. This was due to a
  problem in Cython, not lxml itself.

• iter_links (and related link-rewriting functions) in
  lxml.html would interpret CSS like url("link") incorrectly
  (treating the quotation marks as part of the link).

• Failing import on systems that have an io module.

2.2beta1

=====================

Features added

• Allow lxml.html.diff.htmldiff to accept Element objects, not
  just HTML strings.

Bugs fixed

• Crash when using an XPath evaluator in multiple threads.

• Fixed missing whitespace before Link:... in lxml.html.diff.

Other changes

• Export lxml.html.parse.

2.2alpha1

======================

Features added

• Support for XSLT result tree fragments in XPath/XSLT extension
  functions.

• QName objects have new properties namespace and localname.

• New options for exclusive C14N and C14N without comments.

• Instantiating a custom Element classes creates a new Element.

Bugs fixed

• XSLT didn't inherit the parse options of the input document.

• 0-bytes could slip through the API when used inside of Unicode
  strings.

• With lxml.html.clean.autolink, links with balanced parenthesis,
  that end in a parenthesis, will be linked in their entirety (typical
  with Wikipedia links).

Other changes

2.1.5

==================

Bugs fixed

• Potential memory leak on exception handling. This was due to a
  problem in Cython, not lxml itself.

• Failing import on systems that have an io module.

2.1.4

==================

Bugs fixed

• Crash when using an XPath evaluator in multiple threads.

2.1.3

==================

Features added

Bugs fixed

• Ref-count leaks when lxml enters a try-except statement while an
  outside exception lives in sys.exc_*(). This was due to a problem in
  Cython, not lxml itself.

• Parser Unicode decoding errors could get swallowed by other
  exceptions.

• Name/import errors in some Python modules.

• Internal DTD subsets that did not specify a system or public ID were
  not serialised and did not appear in the docinfo property of
  ElementTrees.

• Fix a pre-Py3k warning when parsing from a gzip file in Py2.6.

• Test suite fixes for libxml2 2.7.

• Resolver.resolve_string() did not work for non-ASCII byte strings.

• Resolver.resolve_file() was broken.

• Overriding the parser encoding didn't work for many encodings.

Other changes

2.1.2

==================

Features added

• lxml.etree now tries to find the absolute path name of files when
  parsing from a file-like object. This helps custom resolvers when
  resolving relative URLs, as lixbml2 can prepend them with the path
  of the source document.

Bugs fixed

• Memory problem when passing documents between threads.

• Target parser did not honour the recover option and raised an
  exception instead of calling .close() on the target.

Other changes

2.1.1

==================

F