Changes

2020-03-06

Added support for Python 3.9 and PyPy
Added proper documentation (based on mkdocs)
Added property is_undefined for processes
Added __version__ for the root package
Refactoring in exception classes
Added usage of flake8 in Tox configurations

2020-03-20

Added support for non-blocking commands
Added option "wait" for running command
stdout and stderr of a command become stream
Improved test coverage

2020-02-29

Enabled support for list shell commands by dir(Shell)
Enabled command autocomplete in BPython and IPython for Shell
Added ability to run shell commands with no-identifier-like name
Added access to the last executed command even if exception was raised
Added property "errors" for stderr output
Added human-understandable behaviour for str() and repr() of Command instance
Some internal refactoring and bugfixes