Yamlindexer

Commits
- Add PyPI badges
- Fix pushing to index when root is a list
- Remove python 3.6
- Fix mypy types
- Merge pull request [14](https://github.com/ruizink/python-yamlindexer/pull/14) by [ruizink](https://github.com/ruizink) from ruizink/fix-list

Commits
- Fix gh workflow
- First version
- Merge pull request [11](https://github.com/ruizink/python-yamlindexer/pull/11) by [ruizink](https://github.com/ruizink) from ruizink/development
- Fix package name (OCD)
- Merge pull request [12](https://github.com/ruizink/python-yamlindexer/pull/12) by [ruizink](https://github.com/ruizink) from ruizink/development
- Allow manual trigger of workflow
- Merge pull request [13](https://github.com/ruizink/python-yamlindexer/pull/13) by [ruizink](https://github.com/ruizink) from ruizink/development