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.

con func a b = a -> b

signature S = sig
    con funcy a b = a -> b
end

structure M : S = struct
    con funcy = func
end