After trigger support

[palkan]

What is the purpose of this pull request?

Closes #215.

What changes did you make? (overview)

This PR is a combination of #226 and #225 with some refactoring changes on top.

Checklist

• [x] I've added tests for this change
• [x] I've added a Changelog entry
• [x] I've updated a documentation (Readme)

[bf4]

THIS IS AMAZING ❤️ ❤️ ✨ 🦄 🕺