Icalendar

-------------------

Minor changes:

- ...

Breaking changes:

- ...

New features:

- ...

Bug fixes:

- ...

-------------------

Minor changes:

- Added corpus to fuzzing directory
- Added exclusion of fuzzing corpus in MANIFEST.in
- Augmented fuzzer to optionally convert multiple calendars from a source string
- Add script to convert OSS FUZZ test cases to Python/pytest test cases
- Added additional exception handling of defined errors to fuzzer, to allow fuzzer to explore deeper
- Added more instrumentation to fuzz-harness
- Rename "contributor" to "collaborator" in documentation
- Correct the outdated "icalendar view myfile.ics" command in documentation. 588
- Update GitHub Actions steps versions
- Keep GitHub Actions up to date with GitHub's Dependabot


Breaking changes:

- ...

New features:

- ...

Bug fixes:

- ...
- Fixed index error in cal.py when attempting to pop from an empty stack
- Fixed type error in prop.py when attempting to join strings into a byte-string
- Caught Wrong Date Format in ical_fuzzer to resolve fuzzing coverage blocker

-------------------

Minor changes:

- The cli utility now displays start and end datetimes in the user's local timezone.
Ref: 561
[vimpostor]

New features:

- Added fuzzing harnesses, for integration to OSSFuzz.
- icalendar releases are deployed to Github releases
Fixes: 563
[jacadzaca]

Bug fixes:

- CATEGORIES field now accepts a string as argument
Ref: 322
[jacadzaca]
- Multivalue FREEBUSY property is now parsed properly
Ref: 27
[jacadzaca]
- Compare equality and inequality of calendars more completely
Ref: 570
- Use non legacy timezone name.
Ref: 567
- Add some compare functions.
Ref: 568
- Change OSS Fuzz build script to point to harnesses in fuzzing directory
Ref: 574

-------------------

Bug fixes:

- Component._encode stops ignoring parameters argument on native values, now merges them
Fixes: 557
[zocker1999net]

------------------

Bug fixes:

- PERIOD values now set the timezone of their start and end. 556

------------------

Minor changes:

- Update build configuration to build readthedocs. 538
- No longer run the ``plone.app.event`` tests.
- Add documentation on how to parse ``.ics`` files. 152
- Move pip caching into Python setup action.
- Check that issue 165 can be closed.
- Updated about.rst for issue 527
- Avoid ``vText.__repr__`` BytesWarning.

Bug fixes:

- Calendar components are now properly compared
Ref: 550
Fixes: 526
[jacadzaca]