* move core into repo, apps into apps folder, update tests

* Update scripts for build:core

* improve scripts

* remove noise from www

* Update .gitignore

* Fix focus bug

* add ci test script

* Update main.yml

* Simplify snaps

* Update readmes

* Improves snapping

* filter snappable shapes, give viewport information to sessions

* defer cloning

* basic snapping

* Improves algorithm for snap points, rendering

* Improves snapping, snaplines

* Enables a clone to snap to its parent

* Adds overlay

* Fix overlay, zoom scaling for distance and speed

* v0.0.103

* Copies bindings together with shapes that are bound

* Remove old shape bindings from copied shape handles

* adds copy and paste, scopes keyboard events to focused elements

* Fix tools panel bug, adds copy across documents

* Makes autofocus default

* Refactor www/styles to Stitches Core

* Update package.json

* Begin refactor of `tldraw`

* More refactoring

* A bit more

* little bit more

* Update yarn.lock

* Drops React dependencies to 16.8

Co-authored-by: Steve Ruiz <steveruizok@gmail.com>