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.

val x = 0
val x = x

type t = int
type t = { A : t }

signature S = sig end
signature S = sig type t structure M : S end

structure S = struct end
structure S : S = struct type t = int structure M = S end