Verto

=======================================

- Add ``parse_dependabot.py`` script to get dependency update information
from dependabot commits.
- Add readthedocs configuration and set to use python 3.9.
- Dependency updates:
- Update actions/checkout from 2 to 3.1.0.
- Update actions/setup-python from 2.2.2 to 4.4.0.
- Update codecov/codecov-action from 1.5.0 to 3.1.1.
- Update coverage from 5.5 to 7.0.5.
- Update flake8 from 3.9.2 to 6.0.0.
- Pin gh-action-pypi-publish to release/v1.
- Update github/codeql-action from 1 to 2.
- Update setuptools from 56.2.0 to 65.6.3.
- Update sphinx from 4.2.0 to 5.3.0.
- Update sphinx-rtd-theme from 0.5.2 to 1.1.1.

- Update documentation to say that alt tags are required for images.
- Update old examples in the documentation
- Update minimum Python version to 3.8, as 3.7 was causing issues with our linter.
- Update sphinx from 4.0.2 to 4.2.0.

- Fix bug where required HTML files are not packaged in build.

This is the first official release of Verto, after over four years of use in production systems.
There are several changes in this release that may break existing pipelines and require changes.

- Add new `processors/external-link` processor that modifies hyperlinks to open in a new tab.
- Modify `processors/scratch` and `processors/scratch-inline` processors to set Scratch code to be rendered by a JavaScript library.

- This replaces the previous method of creating images.
- The ``split`` option has been removed as it is no longer relevant to the new method.
- The ``random`` option has been removed to improve consistency in rendered material.

- Randomising the blocks can be achieved after rendering the code.

- Use GitHub Actions for automated builds and publishing to PyPI.
- Use new declarative setup.cfg file for packaging configuration.
- Removed CodeClimate configuration file.
- Use GitHub Actions for automated testing (instead of Travis CI) and code analysis.
- Switch dependency tracking from PyUp to Dependabot.
- Move changelog outside of documentation to homepage for inclusion on PyPI homepage.
- Correct argument ``custom_settings`` to ``settings``.
- Update images for Scratch examples to use Scratch 3.
- Update regular expression strings in Python code to use raw strings.
- Updated authors to state UCCSER as primary owner.
- Dependency updates:

- Update ``setuptools`` from 41.0.1 to 56.2.0.
- Update ``sphinx`` from 1.8.1 to 4.0.2.
- Update ``sphinx_rtd_theme`` from 0.4.3 to 0.5.2.
- Update ``coverage`` from 4.5.3 to 5.5.
- Update ``flake8`` from 3.5.0 to 3.9.2.
- Update ``Jinja2`` from 2.10.1 to 3.0.1.
- Update ``python-slugify`` from 3.0.2 to 5.0.2.

- Replaces `custom_argument_rules` configuration parameter with `settings` parameter. The `custom_argument_rules` parameter is now set within `settings` under a new name. The settings also allow configuring if thumbnail images for interactives are added to the required images set. More information on these settings can be found in the usage documentation.
- Improve documentation on how to create a release.
- Dependency updates:

- Update `setuptools` from 40.4.3 to 41.0.1
- Update `sphinx_rtd_theme` from 0.4.1 to 0.4.3.
- Update `coverage` from 4.5.1 to 4.5.3.
- Update `Jinja2` from 2.10 to 2.10.1.
- Update `python-slugify` from 1.2.6 to 3.0.2.

- Add title parameter to video processor for translations.
- Dependency updates:

- Update ``setuptools`` to 40.4.3
- Update ``sphinx`` to 1.8.1