Add .gitignore
Provide pi/2
Squashed 'hypermath/' changes from 9735424..ea57981

ea57981 Increment minor version
233b101 Update documentation
a1ab27e Add hpmTranslation to header
fe60ebc Two versions for each transform function
206e735 Fix bug in hmpLookAt
d789d35 Move HPMmatrix struct into header

git-subtree-dir: hypermath
git-subtree-split: ea57981999e3e28c8d07a075faf4c9b9b597efe4
Merge commit '338e7eb05739fb7e91bd1a6aef5d4204f1ed9ce2'
Update gl-math.scm to hypermath 0.2.0
Fix matrix binding
Fix which functions take optional matrices
Fix header include
Update README
Increment minor version