css_lexer/css_parse: Add SourceCursor compacting, ensure CursorCompactWriteSink compacts cursors before write#782

keithamus merged 1 commit intomaincsskit/csskit:mainfrom

css-lexer-css-parse-add-sourcecursor-compacting-ensure-cursorcompactwritesink-compacts-cursors-before-writecsskit/csskit:css-lexer-css-parse-add-sourcecursor-compacting-ensure-cursorcompactwritesink-compacts-cursors-before-writeCopy head branch name to clipboard