v0.15.0a1 - flake8 and doc improvements

Development

• build(deps): Add flake8-bugbear #401
• build(deps): Add flake8-comprehensions #402

Documentation

• Add gp-libs (github, site, PyPI) #403
  • Render changelog in linkify_issues
  • Fix Table of contents rendering with sphinx autodoc with sphinx_toctree_autodoc_fix
• Try to use ToC gist with sphinx.ext.autoapi #400

Full Changelog: v0.15.0a0...v0.15.0a1