Modin

Ray updated
* Updated Ray dependency to 0.6 (284)
* Updated internal Ray API calls to reflect their API changes (284)

Bugfixes
* Various bugfixes for the python backend (274, 276)

New functionality
* `read_table` is now supported (270)
* `read_hdf` is now parallelized (264)

Code Refactor
* Making files more consistent (268)

Documentation
* Add new documentation to readthedocs (269)
* Fix link in documentation (280)

Contributors this release

The following users contributed code to Modin since the last release.

janpipek (New contributor) 🔰
eavidan (Returning contributor) 🌟
osalpekar (Committer)
williamma12 (Committer)
devin-petersohn (Admin)

🎉🎉 Thank you! 🎉🎉

Fix redis and `ray.init` re-initialization error.

Bugfixes

This release contains a few important bugfixes for MPI backend.

Key Features and Updates
------------------------
* Stability and Bugfixes
* FIX-201: Fix warnings to be aligned with latest flake8 (202)
* FIX-195: Fix serialization for numpy objects (200)
* FIX-211: Fix dask[complete] syntax in conda environment file (212)
* FIX-213: Fix NamedTuple serialization (215)
* FIX-224: Fix recursion in processing remote task arguments and serialization of dictionary that has a tuple key (225)
* FIX-228: Add missing configs to workers initialization (229)

Contributors
------------
YarShev
Retribution98

This release contains multiple important bugfixes for MPI backend,
which makes it be more functional and stable.

Key Features and Updates
------------------------

* Stability and Bugfixes
* FIX-170: Fix serialization/deserialization for Ray actors (171)
* FIX-172: Fix serialization/deserialization for Dask actors (173)
* FIX-174: Fix serialization/deserialization for MPI actors (177)
* FIX-179: Handle None return values correctly on MPI backend (180)
* FIX-175: FIX-178: Fix nested remote calls of remote tasks and actor methods (176)
* FIX-187: Make Data_ID unique for different workers on MPI backend (188)
* FIX-183: Fix serialization of dict_keys for MPI backend (184)
* FEAT-185: Add communication logging (186)
* FIX-189: Fix Actor scheduling (190)
* FIX-191: Fix pendinq response after blocking GET request (192)
* FIX-195: Fix serialization for pandas and numpy objects (196)
* FIX-193: Fix actor async execution (194)
* FIX-197: Initialize a backend when doing unidist.put (198)
* Update testing suite
* TEST-181: Added async actor tests (182)

Contributors
------------
YarShev
Retribution98

This release adds support for the dynamic spawning of MPI worker
processes, contains significant refactoring of MPI backend, cut off
unidist CLI, includes important updates for documentation and a bunch of
bugfixes.

Key Features and Updates
------------------------

* Stability and Bugfixes
* FIX-https://github.com/modin-project/unidist/issues/130: Make unidist be pure Python (https://github.com/modin-project/unidist/pull/131)
* FIX-https://github.com/modin-project/unidist/issues/133: Add support of running mpi backend via CLI on Windows (https://github.com/modin-project/unidist/pull/134)
* FIX-https://github.com/modin-project/unidist/issues/69: Pin min msgpack version (https://github.com/modin-project/unidist/pull/135)
* FIX-https://github.com/modin-project/unidist/issues/124: Set max_retries=0 for Ray backend (https://github.com/modin-project/unidist/pull/136)
* FIX-https://github.com/modin-project/unidist/issues/142: Fix flake8 CI fail (https://github.com/modin-project/unidist/pull/143)
* FIX-https://github.com/modin-project/unidist/issues/145: Synchronize Ray with latest changes (https://github.com/modin-project/unidist/pull/146)
* FIX-https://github.com/modin-project/unidist/issues/137: Set threads_per_worker=1 for local Dask cluster (https://github.com/modin-project/unidist/pull/151)
* FIX-https://github.com/modin-project/unidist/issues/152: Clean up MPI backend (https://github.com/modin-project/unidist/pull/153)
* FIX-https://github.com/modin-project/unidist/issues/161: Propagate Backend.put('mpi') to MPI workers (https://github.com/modin-project/unidist/pull/162)
* FIX-https://github.com/modin-project/unidist/issues/163: Fix unwrapping object refs and data IDs (https://github.com/modin-project/unidist/pull/164)
* FIX-https://github.com/modin-project/unidist/issues/167: Set lowest bound for Ray versions (https://github.com/modin-project/unidist/pull/168)
* New Features
* FEAT-https://github.com/modin-project/unidist/issues/3: Add cluster_resources in API (https://github.com/modin-project/unidist/pull/35)
* FEAT-https://github.com/modin-project/unidist/issues/139; REFACTOR-https://github.com/modin-project/unidist/issues/100: Implement the spawning of MPI processes dynamically (https://github.com/modin-project/unidist/pull/144)
* FEAT-https://github.com/modin-project/unidist/issues/159: Add support for Async Actors on MPI backend (https://github.com/modin-project/unidist/pull/160)
* FEAT-https://github.com/modin-project/unidist/issues/165: Add is_initialized feature to unidist API (https://github.com/modin-project/unidist/pull/166)
* Refactor Codebase
* REFACTOR-https://github.com/modin-project/unidist/issues/149: Cut off unidist CLI (https://github.com/modin-project/unidist/pull/150)
* Documentation improvements
* DOCS-https://github.com/modin-project/unidist/issues/128: Update installation section in docs (https://github.com/modin-project/unidist/pull/132)
* DOCS-https://github.com/modin-project/unidist/issues/85: Add docs on running unidist with different backends (https://github.com/modin-project/unidist/pull/140)
* DOCS-https://github.com/modin-project/unidist/issues/147: Update docs to be in line with the code base (https://github.com/modin-project/unidist/pull/148)
* DOCS-https://github.com/modin-project/unidist/issues/154: Make documentation fail on warning (https://github.com/modin-project/unidist/pull/155)
* DOCS-https://github.com/modin-project/unidist/issues/157: Set fail_on_warning: false (https://github.com/modin-project/unidist/pull/158)

Contributors
------------
YarShev, prutskov, no-ponomarev