Danny Navarro eca3c2d8d4 Generalize Maybe type constructor to any Monad
This allows schema definitions with side-effects for any type with a
Monadic/Alternative implementation like IO for example.
2016-01-30 12:29:49 +01:00
..
2016-01-26 13:38:02 +01:00
2015-09-22 14:02:49 +02:00