Bump towncrier from 19.2.0 to 21.3.0

[dependabot]

Bumps towncrier from 19.2.0 to 21.3.0.

Changelog

Sourced from towncrier's changelog.

towncrier 21.3.0 (2021-04-02)

No significant changes since the previous release candidate.

towncrier 21.3.0.rc1 (2021-03-21)

Features

• Ticket number from file names will be stripped down to avoid ticket links such as [#007](https://github.com/hawkowl/towncrier/issues/007). ([#126](https://github.com/hawkowl/towncrier/issues/126) <https://github.com/hawkowl/towncrier/issues/126>_)
• Allow definition of the project version and name in the configuration file. This allows use of towncrier seamlessly with non-Python projects. ([#165](https://github.com/hawkowl/towncrier/issues/165) <https://github.com/hawkowl/towncrier/issues/165>_)
• Improve news fragment file name parsing to allow using file names like 123.feature.1.ext which are convenient when one wants to use an appropriate extension (e.g. rst, md) to enable syntax highlighting. ([#173](https://github.com/hawkowl/towncrier/issues/173) <https://github.com/hawkowl/towncrier/issues/173>_)
• The new --edit option of the create subcommand launches an editor for entering the contents of the newsfragment. ([#275](https://github.com/hawkowl/towncrier/issues/275) <https://github.com/hawkowl/towncrier/issues/275>_)
• CPython 3.8 and 3.9 are now part of our automated test matrix and are officially supported. ([#291](https://github.com/hawkowl/towncrier/issues/291) <https://github.com/hawkowl/towncrier/issues/291>_)
• When searching for the project, first check for an existing importable instance. This helps if the version is only available in the installed version and not the source. ([#297](https://github.com/hawkowl/towncrier/issues/297) <https://github.com/hawkowl/towncrier/issues/297>_)
• Support building with PEP 517. ([#314](https://github.com/hawkowl/towncrier/issues/314) <https://github.com/hawkowl/towncrier/issues/314>_)

Bugfixes

• Configuration errors found during command line execution now trigger a message to stderr and no longer show a traceback. ([#84](https://github.com/hawkowl/towncrier/issues/84) <https://github.com/hawkowl/towncrier/issues/84>_)
• A configuration error is triggered when the newsfragment files couldn't be discovered. ([#85](https://github.com/hawkowl/towncrier/issues/85) <https://github.com/hawkowl/towncrier/issues/85>_)
• Invoking towncrier as python -m towncrier works. ([#163](https://github.com/hawkowl/towncrier/issues/163) <https://github.com/hawkowl/towncrier/issues/163>_)
• check subcommand defaults to UTF-8 encoding when sys.stdout.encoding is None. This happens, for example, with Python 2 on GitHub Actions or when the output is piped. ([#175](https://github.com/hawkowl/towncrier/issues/175) <https://github.com/hawkowl/towncrier/issues/175>_)
• Specifying title_format disables default top line creation to avoid duplication. ([#180](https://github.com/hawkowl/towncrier/issues/180) <https://github.com/hawkowl/towncrier/issues/180>_)

Improved Documentation

• The README now mentions the possibility to name the configuration file towncrier.toml (in addition to pyproject.toml). ([#172](https://github.com/hawkowl/towncrier/issues/172) <https://github.com/hawkowl/towncrier/issues/172>_)
• start_line corrected to start_string in the readme to match the long standing implementation. ([#277](https://github.com/hawkowl/towncrier/issues/277) <https://github.com/hawkowl/towncrier/issues/277>_)

towncrier 19.9.0 (2021-03-20)

No significant changes.

... (truncated)

Commits

• eab3461 Update NEWS.rst
• bd963c3 add back the newsfragment...
• 3bf4479 Bump version to 21.3.0
• 3237ebd remove misc section
• 6eab894 Correct underlines setting to toml in readme
• 4143e0f add 332.misc
• 05eea3f Release 21.3.0rc1
• 2841c12 Release 19.9.0 (#331)
• 7267fb5 twisted-alike (so similar) automatic publishing on gha (#315)
• 499c8f7 use incremental to canonicalize versions for release (#329)
• Additional commits viewable in compare view

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[codecov]

Codecov Report

Merging #577 (36aed32) into master (d265ed8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #577   +/-   ##
=======================================
  Coverage   93.78%   93.78%           
=======================================
  Files           5        5           
  Lines         499      499           
=======================================
  Hits          468      468           
  Misses         31       31           

Flag	Coverage Δ
unit	93.78% <ø> (ø)

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