fix #234.
Merge pull request #270 from eggrobin/logging-in-separate-class

Move logging interface to a separate class
The lambda.
Move matrices.
Remove code from RenderingFrame.
Cleanup.
Lint.
only InitGoogleLogging if needed
After egg's review.
thanks for the warning
Merge pull request #271 from pleroy/BarycentricRotatingTransform

Barycentric rotating transforming iterator.
fix preprocessor
Merge pull request #272 from eggrobin/reinit-google-logging

Only InitGoogleLogging if needed
Merge remote-tracking branch 'la-vache/master' into intrinsic-acceleration