Fix/vanish

[TrevorBurgoyne]

Fix Vanish Mode

Description

• Don't draw annotations when a subtask is vanished
• Add configurable annotation_vanish_all_keybind
• Track annotation size per subtask
  • Remove annotation size cookie, since it was tracking just one size per annotation session
  • TODO: remove line size per annotation?
  • TODO: make toolbox collapse arrow not absolute?
• Deprecated the default_annotation_size argument in the configuration object. Use the initial_line_size argument instead. See api_spec.md for details.

Implements some functionality I initially implemented as part of #153, however the rest of that PR is pretty obsolete

PR Checklist

• Merged latest main
• Version number in package.json has been bumped since last release
• Version numbers match between package package.json and src/version.js
• Ran npm install and npm run build AFTER bumping the version number
• Updated documentation if necessary (currently just in api_spec.md)
• Added changes to changelog.md

Breaking API Changes

Deprecated the default_annotation_size argument in the configuration object. Use the initial_line_size argument instead. See api_spec.md for details.