Ryboe CSS3 Versions Save

Basic support for Cascade Layers @layer

• fix bug in scrollbar-color completions

• support scrollbar styling properties
• better highlighting for @supports

• improve @supports highlighting for @nest
• add scrollbar-color and scrollbar-width properties

• improve @supports highlighting
• add support for paint() func
• minor updates for changes to CSS Transforms Level 2

• Fix typo in completion: border-leftradius -> border-left-radius

• add @property syntax highlighting
• add the touch-action property
• add border-block-start/end and border-inline-start/end properties
• rescope property names as support.type.property-name.css to match the default CSS plugin

Once again, a very big thank you to @argyleink for all of these contributions! 👏

• Fix syntax error caused by stray quote in functions.py. Thanks @joreiff for identifying the problem!