[De]serialization of times in JavaScript; proper integer division in JavaScript; Basis.crypt; Top.mkRead'; more aggressive Mono-level inlining, for values of function-y types

con id = fold (fn nm => fn t :: Type => fn acc => [nm] ~ acc => [nm = t] ++ acc) []

con idT = id [D = int, E = float]

val idV = fn x : $idT => x.E