Initial work with Pykka.

This is very promising and cool.
Pykka-fied the extract functions.
change-signature stuff is working.
Codeassist stuff.
findit stuff.
History is working...almost.
Fixed filecmp stupidity with custom reporting function.
Mostly work on getting tests working again.
Using 'requests' for long-running test now.
More 'requests' switching.
Added some docs, and more widespread use of success_monitor.