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 = 1 :: 2 :: []
val y = 3 :: 4 :: []

fun main () : transaction page = return <xml>
  {[ListPair.mp plus x y]}
</xml>