v0.5.29

Notable changes

• Some FileHandler classes (specifically the ones for local directories
  and git repositories) now support enumerating files contained in them.

  This new functionality is used to make the entrypoint argument
  optional in some cases.

• The Docker runner for Native Capella now copies files into the
  container instead of mounting them as volume, improving compatibility
  with docker-in-docker setups (mostly found in CI).

Full changelog

New features

• filehandler: Add read/write_file convenience methods by @Wuestengecko (699362c)
• filehandler: Add support for listing files by @Wuestengecko (72da4f5)
• filehandler: Convert file:// URLs to Path objects by @Wuestengecko (f04debb)
• loader: Derive entrypoint from filehandler's listing by @Wuestengecko (edd2c3c)
• native: Copy files into / out of docker container by Paula-Kli (6de29dc)

Documentation changes

• Normalize whitespace in docstrings and comments by @Wuestengecko (cedd252)

CI/CD changes

• Configure coverage.py by @Wuestengecko (f17dcc4)

Code refactorings

• filehandler: Move abstract FileHandler into submodule by @Wuestengecko (ce1ad6a)