general
-------

- change lua module names
- check for name conflicts ('module' used in mods)
- test
- reload check, declaration, luatex test
- import/update doc
- fix Makefile: test files are doc, not runfiles
- make tests cleaner: \begingroup\expandafter\ETC.
- handle catcodes for Plain

regs
----

- check why only 100 or so \inserts can be allocated
- issue a warning if etex not loaded
- handle catcodes for Plain