v7.0.0

Changes from this release

[bug] #253: Provision instruction for multiple wells is not including all wells in the request
[support] #252: Switch to using .readthedocs.yml for docs build config
[support] #251: Add code coverage badge
[support] #250: Bump test dependencies, notably pytest to >=5.4, pylint to 2.5.2 and tox >=3.15
[support] #249: Update documentation dependencies, notably Sphinx to >=2.4
[feature] #248: Bump Pint version to 0.9
[support] #247: Add black as auto-formatter to pre-commit workflow
[support] #245: Add expected propagate_properties behavior tests
[bug] #244: Revert Protocol.propagate_properties to use Well.add_properties
[feature] #239: Add absorbance and fluorescence capabilities to 96-well-v-bottom container type
[support] #243: Update docs with environment setup and testing
[support] #243: Restructure travis.yml jobs structure to separate out each stage
[support] #243: Add basic pre-commit infrastructure, shift pylint inside pre-commit
[support] #241: Deprecate support for Python 3.5, add support for Python 3.8
[feature] #238: Add 96-well-v-bottom container type