Update weighteffect.py

Added the stat_modder function
Merge pull request #2 from Utreekov/patch-2

Update weighteffect.py
Merge pull request #3 from bedevere/0.1

0.1
Update weighteffect.py

some bugs fixed
Merge pull request #1 from bedevere/master

Update me
Merge pull request #2 from Utreekov/master

Blarg