fold classes work
Beginning of decorations
Renders decoration changes.
Rendering decorations works well.

Also specs.
Debounce the rendering of decorations
Add initial addDecorationForMarker()
Specs for marker decorations
Implement removeDecorationsForMarker
Nof
Name changes
Clean up specs based on feedback.
Add api for getStartBufferPosition and related fns
:lipstick: Clean up based on feedback
:lipstick:
Add `addDecorationForBufferRowRange` and related remove
Remove the comment about overlap

Turns out it’s already dealing with overlap by not emitting events
when there is an overlap.
:lipstick: remove decoratorType instance var
Use setImmediate rather than setTimeout
Add specs for fold rendering
Add specs for the editor interface

for decorations in ranges and associated with markers