Update tox.ini

See merge request !314

Resolve "Lessons doesn't get cancelled by events in "My timetable""

Closes #213

See merge request !311

Merge branch 'new-model-based-on-calendar' of edugit.org:aleksis/official/aleksis-app-chronos into new-model-based-on-calendar

Merge branch 'new-model-based-on-calendar' of edugit.org:aleksis/official/aleksis-app-chronos into new-model-based-on-calendar

Currently still without the actual calendar component

Update tox.ini

See merge request !308

Do release 3.0.1

See merge request !306

Update .eslintrc.js

See merge request !303

Update pyproject.toml

See merge request !305

Merge branch 'new-model-based-on-calendar' of edugit.org:aleksis/official/aleksis-app-chronos into new-model-based-on-calendar

Resolve "Fixtures contain old Room model"

Closes #205

See merge request !304