Parse and print content streams
TODO entry: parse and print content streams.
- Note: text extraction already parses some content streams (in text objects). Merging the two passes, and extracting the text content by querying the AST should deduplicate some code - Pomp
Content streams are stream objects that aren't ObjStm or Xref type, i.e. they hold the content to be displayed rather than document structure information. Currently the parser prints the undecoded byte arrays directly into the output.