Changelog.scim

= Changelog

== v0.37.0
date = 2024-12-12

Scala 3.5 based release

• all modules now use at least java version 17
	• This is now actually the oldest supported java version (except for commercial extended support we don’t have). This feels strange.
• publish channel and replication module
	• module boundaries are likely to change, but for now these help a lot with replicating rdt deltas
	• channels now has a nio TCP module
• add experimental DTN replication work
• add consensus protocol datattypes
• enhanced UID generation and printing for better debuggability (and unlikely collisions)


• todolist uses experimental wasm backend
• key-value store implementation case study


== v0.36.0
date = 2024-08-24

# Api changes

• rename module imports to use generic names:
	• rescala -> reactives
	• kofre -> rdts

• refactor API to no longer require bundle traits
	• this removes the capability to select schedulers at runtime and instead moves the selection to compile time
	• this release uses the levelled scheduler

• rename event.act to event.branch for a more consistent API

• remove infix on most methods

• reactive tags integration no longer depends on scalatags, works on dom elements directly

• rdts still have quickly changing API
	• no more extensions based wrapped APIs
	• more systematic Ids

# Extra modules

• reactive lenses experiments
• lore is now part of the repo (not included in releases)
	• there is also an experimental lore compiler plugin
• add channels module as an experiment to have rdt specific communication infrastructure
	• with initial DTN support
• local first access control experiments
• vendor in quicklens and adapt to allow to produce deltas
• remove the graph compiler module (historical now)
• add webview experiments

# Internal improvements

• migrate all tests to munit
• compile with safe init and explicit nulls (most modules)
• make a special propagation phase for followup transactions (this is still not a well-designed area …)


== v0.35.1
date = 2024-03-08

• update Scala version to 3.3.3 due to incompatible release


== v0.35.0
date = 2024-02-24

This is a smaller release meant to mark a stable point before incompatible changes


reactives:

• allow .value inside fold

replicated data types:

• remove dotset/map/fun, now generically generated from maps


== v0.34.0
date = 2023-11-10

for reactives:

• drop Scala 2 support
	• We kept this around for compatibility with Scala Loci case studies, but those will keep working just fine with 0.33.
	• Maintaining the Scala 2 macros became too much. Every refactor breaks them in very subtle ways, due to the interactions of the generic nature of the code, and the macros resolving types weirdly.
	• We would like to update some APIs to make better use of Scala 3 features, in particular better handling of implicits, and more flexible macros will make certain parts of the code much more maintainable and enable better syntax for users.
• removed internal types from the public interface trait
• remove old fold syntax
• remove reduce (use new fold syntax instead)
• remove zip events (use event expressions instead)
• remove += (use observe instead)
• remove apply for reading values, use value instead
• rename \ to except
• rename latest to hold
• rename last to list
• improve Event.fromCallback syntax
• remove reactive-streams dependency and upgrade to java Flow instead (still mostly untested, because their test suite requires finite streams, which we don’t have)
• add snap to snapshot some signals when an event triggers (like map, but ignoring the event parameter)
• enable debugger hooks


for replicated data types:

• generate lattices from orderings
• more systematic causal time implementation and use
• generalized dot using lattices by filtering dots instead of custom merges
• drop decompose lattice and normal lattice distinction, decomposition is now simply a best effort feature


== v0.33.1
date = 2024-06-01

• fix default signal and event expressions in JavaScript


== v0.33.0
date = 2023-02-22

• move errant new transactions during propagation to observer phase
• partially undo bundles to improve doc compile time efficiency
• new Fold now correctly handles dynamic dependencies
• more structured debug info stored in reactives
• simplify Lattices inheritance structure


== v0.32.0
date = 2022-12-31

• automatic derivation of replicated data types
	• cleaned up implementations of built-in replicated data types
• Scala 3 version now has signal macros
• move incremental collections' thesis results into main repository


== v0.31.0
date = 2021-12-07

• drop checked macro support, use snapshot helpers instead
• promote fullMV scheduler to published artifact
• add experimental reactor syntax
• internal refactoring for Scala 3 support (-macros)


== v0.30.0
date = 2020-04-10

• update ScalaJS to 1.0
• fixes to cross compile for 2.11 (JVM only), 2.12, and 2.13
• new Signal.map macro
• more CRDT experiments


== v0.29.0
date = 2019-09-15

* update scala-loci version to 0.3.0


== v0.28.0
date = 2019-09-08

* fix rescalatgas observer behavior


== v0.27.0
date = 2019-09-7

Include small external projects into the main project. This simplifies
publishing and makes experimental features available in the published versions.


== v0.26.0
date = 2019-07-14

* enable .value use in filter and collect macros
* bugfixes for fold macro
* add more crdts/lattice types
* improve automatic name generation of reactives
* update dependencies

== v0.25.0
date = 2019-03-31

* many improvements to rescalatags
* internal code cleanup and refactoring
* CRDT library and distribution based on loci cleanups

== v0.24.0
date = 2018-07-14

* move default import to rescala.default
* updates to flatten operator
* improve reactive macro cut out
* better support for restoration


== v0.23.0
date = 2018-05-07

no notes

== v0.22.0
date = 2018-02-25

* add experimental multi fold events
* fold is now a macro (can use signal dependencies)
* rescalatags can now handle frags
* internal refactorings


== v0.21.1
date = 2018-01-28

* fix infinite loop when starting turns in observers

== v0.21.0
date = 2018-01-28

* Reactive expressions are now static by default,
and complain if any dynamic access happens.
* Event.map is now also a macro and allows accessing reactives.
* Internal interface cleanups and performance improvements.


== v0.20.0
date = 2017-11-14

no notes

== v0.19.0
date = 2016-12-21

This is mostly a maintenance release to support Scala 2.12.

* add Observable type alias to engine

== v0.18.0
date = 2016-09-19

* many fixes and improvements for the Signal macro
* add the rescalatags mini framework (thanks scala.rx and scalatags)
* reactives can now propagate exceptions
* signal can now be empty
* importing `rescala._` should now cover everything useful (and not much more)
* improved flattening, can now flatten many more combinations
* migrated from junit to scalatest only
* add reactive streams compatibility layer
* allow garbage collection of unused downstream reactives

== v0.17.0
date = 2016-07-04

embed RESwing
embed case studies
update locksweep semantics to match parrp (according to tests)
release locks before observer phase


== v0.16.0
date = 2016-04-04

* locksweep is now counter based
* refactor internal API
* benchmark cleanups and additions

== v0.15.0
date = 2016-02-25

* reactive state handled per engine
* merge pipelining branch

== v0.14.0
date = 2016-02-09

no notes

== v0.13.0
date = 2015-06-20

* add microbenchmarks
* fix bug with missed key transfers
* compile with scalajs
* make composition of reactives typesafe with regard to internal state

== v0.12.0
date = 2015-06-15

AtomicReferences instead of synchronized for lock implementation
ParRP turn refactoring
remove cyclic reference between turns and engines
experimental GC starting from unused sources

== v0.11.0 aka the thesis version
date = 2015-03-12

disabled assertions
added exponential back-off as a combined waiting strategy
bug fixes and code cleanups

== v0.10.0
date = 2015-02-11

simplify inter turn synchronization by introducing explicit keychains
miscellaneous fixes improvements and renamings

== v0.9.0
date = 2014-12-29

code cleanups and minor improvements

== v0.8.0
date = 2014-12-22

reactives with a single static dependency now reuse the lock of their predecessor


== v0.7.0
date = 2014-12-19

added STM turns
added yielding turns
philosophers are back! and eating!

== v0.6.0
date = 2014-12-17

fixed dynamic reads
improved turn creation interface
added spinlocking for initial lock acquisition
removed philosophers

== v0.5.0
date = 2014-12-11

this has improved pessimistic locking

== v0.4.0
date = 2014-12-01

no notes

== v0.3.0
date = 2014-10-29

no notes

== v0.2.0
date = 2016-08-17

version used for public case and user studies