- When a new file is read, the old FontList data shouuld be free'd.
- Ideally, if a new file uses some of the same fonts, we should
  avoid re-rreading the TFM file.
- Add \special support for shading.
- Support more of Press format.
- Fix fonts used by Scribe, so spacing is OK.
- Get more of the TeX fonts into libfonts.a
- When asking for a new file, the name of the old one should be cleared
- Speedup!!
- Documentation?
