Fix progress updates

Only pinvoke kernel32 on Windows

Thread stderr through and change simplification order

Simplify initializers before constants since that will reduce the number
of constants by a lot.

Tag v1.1

Ubuntu x64 examples v1.0

Tag v1.0 for linux-arm32-examples

Tag v1.0 of Fuzzlyn

Tag first version of Fuzzlyn for which lots of seeds have been made
public.