Cleans up interface (it's now a command line option) and renames project to "sqlcache" in the all-one-word style. Still has issues to do with concurrency, retrying transactions, and foreign function calls that either rely on state or have side effects.

type q = (fn p => p.1) (int, float)
type q = (fn p => p.1 * $p.3) (int, float, [])