* Improve docstrings for `StringView+SwiftSyntax.swift`
* Move changelog entry to correct section & reword
* Change parameter type from `Int` to `ByteCount`
* Move AbsolutePosition / ByteCount conversion to internal API
* Only warn once if syntax tree cannot be parsed
* Move Syntactic Sugar examples to a dedicated file
* Change SyntacticSugarRuleVisitor from SyntaxAnyVisitor to SyntaxVisitor
* Add `SugaredType` enum to help with the implement `SyntacticSugarRule`