v.2.0.0

Version 2 requires Typst 0.9.0 or newer. Rendering is now done using the new
raw.line elements get consistent line numbers and syntax highlighting (even
if showrange is used). Rendering is now done in a #table.

• Added theme and syntaxes options to overwrite passed in #raw values.
• Breaking: Renamed tab-indend to tab-size, to conform with the Typst option.
• Breaking: Removed continue-numbering option for now. (The feature failed in combination with label parsing and line highlights.)
• Breaking: Removed styling of line numbers via a show-rule.