move facts code to facts.py
move non-core goals to goals.py
remove old strategies code
rearrange goals in goals.py
remove setaddo

This was unused and not particularly well written
squashme
rearrange functions in core.py
doctests in core.py
doctests in facts.py
doctests in assoccomm
Merge pull request #18 from mrocklin/corecore

Corecore