TooMuchTheme

`tmTheme` support library for Swift

Includes:

Theme type
- Codable to/from tmTheme format
- Generate NSAttributedString attributes from a given Theme and Scope or Context
ScopeSelector type
- Codable to/from string format
- Scope and Context matching
- Fully compatible with TextMate 2 format
Scope and Context types
- A Scope is a list of scope names, which emulates a TextMate scope (grammar derivation)
  - Codable to/from space-separated scope names string
  - Direct (matchAndRemoveFirst) and transitive (matchAndRemoveLeading) scope name matching
- A Context models a text editing selection, and is either
  - A Scope (main), or
  - A pair of Scopes, one to the left of the text cursor (left) and one to the right (main)
ScopeName type
- Codable to/from dot-separated components string
- Prefix matching

For example usage: