Log message:
Mark packages that fail with Python 2.7

Log message:
py-ujson: update to 4.0.1.

4.0.1

Fixed

    Fix UnicodeDecodeError on arm64/aarch64 (#435) @hugovk

4.0.0

Added

    Add support for Python 3.9 (#430) @hugovk
    Build wheels for Python 3.9 (#431) @hugovk

Removed

    Drop support for EOL Python 3.5 (#424) @hugovk

Fixed

    Fix indent and add test case (#426) @chenhan1218
    Update code samples in README (#427) @verhovsky

3.2.0

Added

    Make PEP 384 compliant (#417) @tekknolagi
    Build and deploy aarch64 wheels (#422) @geoffreyblake

3.1.0

Added

    PEP 489 Multi Phase Init support (#418) @WillAyd

Fixed

    PyPy3 test fixes (#413) @mgorny

Log message:
py-ujson: updated to 2.0.3

2.0.3:
Changed
Drop legacy distutils in setup.py
Update benchmarking

Fixed
Decrease dict key reference
Remove double_precision and precise_float from help text

Log message:
py-ujson: updated to 2.0.2

2.0.2:
Fix "�� is not JSON serializable" on Python 3

Log message:
py-ujson: updated to 2.0.1

2.0.1

Fixed
Fix Windows build and test Python 3.5-3.8 on Windows

2.0.0

Added
Include license file in manifest
added "static" to C functions, where possible
bring back benchmark introduction
Add syntax highlighting to README
Test on new Travis CPUs
Test on GitHub Actions
Test on Python 3.9-dev to avoid surprises
Use Release Drafter to draft releases
Deploy from GitHub Actions instead of Travis CI
Autodeploy to PyPI from Travis CI
Lint with pre-commit: Black, isort, Flake8

Changed
Use Google's double-conversion lib to fix floating-point precision when \ 
converting doubles to and from strings, improves double encoding by 4-5x
Reduce default buffer on stack size
Update ultrajsondec.c
Indent dict values
Test with pytest
Less Travis
Update links
Tests: Remove unused, unmaintained blist
Only deploy sdist from Travis CI

Removed
Drop EOL Python 2.5-2.6, 3.2-3.4 and add 3.7-3.8
Remove serialization of date/datetime objects
Remove double_precision encoding option and precise_float decoding option
Remove generic serialization of objects/iterables
Remove support for __json__ method on str
Remove blist tests

Fixed
Fix for sort_keys bug and a typo
Fix for overflowing long causing invalid JSON
Following std JSON handling of None dict key
Fix for incorrect order when using OrderedDict
Fix reference counting bug for dict values
Fix a couple of memory leaks.
Correct JSON decoding implementation to die on trailing commas in Objects
fixup dconv_wrapper linkage
Fix Warning: 'classifiers' should be a list, got type 'filter'
Remove redundant license parameter
do not forcefully remove the build directory manually
Merged pull request to fix memory leak.
http -> https

Log message:
UltraJSON is an ultra fast JSON encoder and decoder written in pure C with
bindings for Python 2.5+ and 3.