5.4
5.4 release
Fix typos
constructor.timezone: __copy_ & __deepcopy__
Build modernization (GHA, wheels, setuptools) (#407)
Make default_flow_style=False
Fix logic for quoting special characters (#276)
scanner: use infinitive verb after auxiliary word could
fix typos and stylistic nit
Fix compatibility with Jython
remove some unused imports (#260)
Avoid repeatedly appending to yaml_implicit_resolvers
Fix up small typo