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 r = {A : int, B : int, C : float}
type string = int

val x : r = {A = 1, B = "hi", C = 2.3}