Suggestion: Toggle to protect timeline from further changes #385
Description
Issue: Keyboard shortcuts such as b and s can easily cause unwanted modifications without the user noticing, i.e. when trying to type in the inspector without having it properly selected. Beat timelines in particularly are often prepared in advance of annotation and accidental modifications can break alignment to the score.
Proposed Solution: For timelines that you are no longer planning to modify during the session, it would be nice to have a toggle in the manager that freezes it in it's current state, or at least gives warning when a new modification is made while the protection is active.