v3.3.1 (2021-01-23)
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(Notes not shown on release)

TL;DR: Updated for 4095

- Theme: Support `style` and `background_modifier` rule keys
- Theme: Support mappings/objects for `settings` selector
- Theme: Update list of elements and attributes to 4095
- Scheme & Theme: Fix highlighting of `blend` color modifier function
- Scheme & Theme: Add support for "auto" value in "edit current theme/scheme" commands
- Settings: Offer completions for dark and light color scheme and theme variants
