Release v3.0.4

[evhub]

This is primarily a bugfix release to resolve #804. See Coconut's documentation for more information on all of the features listed below.

Language changes:

• 784: where statements now use temporary variable names to limit the scope of contained assignments.

• 795: New async_map function utilizing anyio to work with asyncio or trio.

• 793: New mapreduce, collectby.using_threads, collectby.using_processes, mapreduce.using_threads, and mapreduce.using_processes built-ins.

• 787: Support for .method[index] implicit partials.

• 749, #792: Some built-ins have been renamed for clarity (the old names will still work unless --strict is passed). Specifically:

  • recursive_iterator -> recursive_generator
  • parallel_map -> process_map
  • concurrent_map -> thread_map

• 797: Partial application objects now preserve the original function's __name__ attribute.

• 789: Coconut will automatically backport ExceptionGroup using the exceptiongroup module.

Compiler changes:

• 772: Substantial improvements to recompilation speed for most files.

• 798: New api.find_packages and api.find_and_compile_packages utilities for working with Coconut packages.

• 803: New --fail-fast option to fail upon the first error when compiling multiple files.

• 778: The --history-file command-line option has been removed; use COCONUT_HISTORY_FILE environment variable if you really need it.

Bugfixes:

• 804: Fixed an incompatibility with new cPyparsing versions.

• 781, #794: Improved formatting for compilation errors/warnings.

• 800: override now works in conjunction with classmethod and staticmethod.