This PR:
- adds history options to several commands in order to allow them to
support squashing and ephemeral data (previously, these commands had
boolean values for squashing / ephemeral)
It also:
- changes `markId` to return the editor instance rather than the mark id
passed into the command
- removes `focus` and `blur` commands
- changes `createPage` parameters
- unifies `animateShape` / `animateShapes` options
### Change Type
- [x] `major` — Breaking change
### Test Plan
- [x] Unit Tests
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