Fixes by @augmero to make it work in Blender 4.1

Patched to work with Blender version 3.6

Modified the readme and manual

Default tool now works with blend shapes

-Change the AnimOffset mask bar color to the "preview range"

AnimOffset bar color match theme now

Curve tools now work with shape keys

Fixed a bug on the "default" curve tool.

Small fixes and a new "default" curve tool

Fix for #77 "AnimOffset mask not working"