Feature: Editing and removing subtasks

[rebeckaengstrom1]

When working with tasks it's possible to add subtasks and complete subtasks but correcting a typo in a subtask requires completing said subtask and then typing it all out again in a new subtask.

It would be great if we could edit and remove subtasks without completing them.

[ulsklyc]

Shipped in v2.12.0. Each subtask row now carries a rename and a delete action, at the same size and in the same restrained tone as the actions on the task row above it, and deliberately not hover-only - a touch device has no hover, and a typo is exactly what you fix on a phone. Deleting asks first, since ticking off can be taken back and this cannot.

Thanks for the report, @rebeckaengstrom1.