Log message:
py-yaml: updated to 5.4.1

5.4.1
* Fix stub compat with older pyyaml versions that may unwittingly load it

5.4
* Build modernization, remove distutils, fix metadata, build wheels, CI to GHA
* Fix for CVE-2020-14343, moves arbitrary python tags to UnsafeLoader
* Fix memory leak in implicit resolver setup
* Fix py2 copy support for timezone objects
* Fix compatibility with Jython

Log message:
py-yaml: updated to 5.3.1

5.3.1:
* Prevents arbitrary code execution during python/object/new constructor

Log message:
py-yaml: updated to 5.3

5.3:
Use `is` instead of equality for comparing with `None`
fix typos and stylistic nit
Fix up small typo
Fix handling of __slots__
Allow calling add_multi_constructor with None
Add use of safe_load() function in README
Fix reader for Unicode code points over 0xFFFF
Enable certain unicode tests when maxunicode not > 0xffff
Use full_load in yaml-highlight example
Document that PyYAML is implemented with Cython
Fix for Python 3.10
increase size of index, line, and column fields
remove some unused imports
Create timezone-aware datetimes when parsed as such
Add tests for timezone

Log message:
py-yaml: updated to 5.2

5.2:
* Repair incompatibilities introduced with 5.1. The default Loader was changed,
  but several methods like add_constructor still used the old default
  https://github.com/yaml/pyyaml/pull/279 -- A more flexible fix for custom tag \ 
constructors
  https://github.com/yaml/pyyaml/pull/287 -- Change default loader for \ 
yaml.add_constructor
  https://github.com/yaml/pyyaml/pull/305 -- Change default loader for \ 
add_implicit_resolver, add_path_resolver
* Make FullLoader safer by removing python/object/apply from the default FullLoader
  https://github.com/yaml/pyyaml/pull/347 -- Move constructor for object/apply \ 
to UnsafeConstructor
* Fix bug introduced in 5.1 where quoting went wrong on systems with \ 
sys.maxunicode <= 0xffff
  https://github.com/yaml/pyyaml/pull/276 -- Fix logic for quoting special characters
* Other PRs:
  https://github.com/yaml/pyyaml/pull/280 -- Update CHANGES for 5.1

Log message:
py-yaml: updated to 5.1.2

5.1.2:
* Re-release of 5.1 with regenerated Cython sources to build properly for Python \ 
3.8b2+

Log message:
py-yaml: updated to 5.1.1

5.1.1:
* Re-release of 5.1 with regenerated Cython sources to build properly for Python 3.8

Log message:
py-yaml: updated to 5.1

5.1:
* Some modernization of the test running
* Install tox in a virtualenv
* Allow colon in a plain scalar in a flow context
* Fix typos
* Improve RepresenterError creation
* Resolves 57, update readme issues link
* Document and test Python 3.6 support
* Use Travis CI built in pip cache support
* Remove tox workaround for Travis CI
* Adding support to Unicode characters over codepoint 0xffff
* Support unicode literals over codepoint 0xffff
* add 3.12 changelog
* Fallback to Pure Python if Compilation fails
* Drop unsupported Python 3.3
* Include license file in the generated wheel package
* Removed Python 2.6 & 3.3 support
* Remove commented out Psyco code
* Remove call to ord in lib3 emitter code
* Allow to turn off sorting keys in Dumper
* Test on Python 3.7-dev
* Support escaped slash in double quotes "\/"
* Import Hashable from collections.abc
* Make default_flow_style=False
* Deprecate yaml.load and add FullLoader and UnsafeLoader classes
* Windows Appveyor build

Log message:
py-yaml: updated to 3.13

3.13:
* Rebuilt with the latest Cython to support the new Python 3.7 release.
* No functionality is different from PyYAML 3.12 in this release.

Log message:
Updated py-yaml to 3.12.

* Wheel packages for Windows binaries.
* Adding an implicit resolver to a derived loader should not affect
  the base loader (fixes issue #57).
* Uniform representation for OrderedDict across different versions
  of Python (fixes issue #61).
* Fixed comparison to None warning (closes issue #64).

Log message:
Remove unnecessary test target -- distutils.mk provides this.