Update the Editor

[getdave]

Must Haves

The following items are a list of must have tasks that need to be completed to update the repo:

• Update all dependencies to latest version - this will involve fixing a tonne of knock on effects due to update to @wordpress/* packages since this repo was created.
• Fix linting errors across JS files.
• Fix linting errors across PHP files.
• Finalise implementation of undo/redo and merge into master.
• Review usage of @wordpress/interface package and update/implement as required.
• Add placeholder to allow for supporting fetchLinkSuggestions.

Bugs

• Multiple Block Selection fails to delete on Backspace #18

Nice to Haves

• e2e tests to verify basic functionality.
• Support for Media Library Enable media Library for image/media block #17
• Investigate support for custom blocks.
• Investigate support for Reusable blocks.
• Investigate possibility of using entities for undo/redo.