Random bits to make template & package developer experience better.

Added

• Template unit tests for documentation generation, linting and version bumping
• Docstring for function
• Coverage and doctest commands for documentation #97

Changed

• Initial linting is error free #227
• Consolidated test/lint/build/docs into single matrix workflow #270
• Enforce isort configuration
• Default for package_short_description in cookiecutter questionnaire
• Link checker ignores GH private pages and test pypi site #288
• In CI build workflow make prospector die if there are errors #275
• All example tests make use of example function
• Use bumpversion for version in Sphinx config #44
• Regenerated docs/conf.py with sphinx-quickstart v3.5.4 + enabled built-in extensions #44
• Generate api rst files with extension instead of custom function #95

Removed

• .pylintrc file, was too strict, too soon #267
• Unused development dependencies #167
• Statements in project_setup.md already mentioned in README.dev.md

Tested with https://github.com/sverhoeven/justatest2, where workflows are build workflow is green and https://justatest2.readthedocs.io/en/latest/autoapi/justatest2/my_module/index.html works.