1 * unboxed the state in ST and IO, and specialised IO (it is no longer built
4 * reversed the sense of -fwarn-{overlapped,incomplete}-patterns. The driver
5 now has to have the flag to provide the warning.
7 * added the -Wnot, -W, and -Wall options. Set up a default set of warnings,
8 namely -fwarn-{overlapped,incomplete}-patterns.