Moved half edge stuff to DDG branch
Half Egde lib work
small fixes to gl lib
merge master
Revert "merge master"

This reverts commit 7d4d4e5cb7bbbd38491ebb39b68414593694707e, reversing
changes made to 5711b9720f8a3e43e0539abe2f4b0433543d9ad5.
Small windows fixes
Switched to single mesh model
Merge branch 'master' of https://github.com/est77/ramenlibs
Define OPENEXR_DLL only on windows
Merged master
Updated after merging master