* Possibly write a basic ANSI-92 SQL parser which could be extended
when writing other new parsers.
+* Make as many "required" modules as possible optional. This will
+ require support in the Makefile, the tests, and the modules
+ themselves (they'll need to die gracefully if prerequisites are
+ not installed).
+
* Support for precompiled Parse::RecDescent grammars.
* More code generation producers, such as Java, PHP, and Python.