Restructure specs
Allow :^ instead of :**
Add function specs
Equalize output formula
[Bug] rm -> rm!
Merge remote-tracking branch 'origin/master' into develop
Allow pi to pretermit product ope
[BUGFIX] #19
Improve specs
[BUGFIX] :BFUNC and add specs
Merge pull request #34 from gogotanaka/develop

[Version: 1.7]