Update minitest-reporters to 1.0.6.
Reduce duplication, move #codes to Esc.
Update to add new entry and notes.
Add more documentation and test coverage.
Add class/module end markers.
Move #foreground and #background into Helpers;

This means that Stream and Interface can both use these methods. Line works slightly differently because it creates Stream instances.
Add more documentation.
Extract common #add to new module: Positional.