Initial version
Add README file
Purge C++11 restriction

Lower minimum GCC version to 4.4
Implement install target

Use doxygen (if found) to generate html sources.
Provide pkg-config file.
Remove Rubik namespace leftovers
Annotate Vec3, Vec4 classes
Tweak Doxyfile.in for better html look
Include math headers as system headers
Improve existing Vec3, Vec4 documentation
Update Doxygen.in configuration file

Sorting, grouping and graphs settings mostly.
Do not sort detailed description
Remove detailed description where unnecessary
Reference X, Y, Z, W constants in Vec3, Vec4
Add Mat3, Mat4 documentation
Add Quaternion documentation
Enable cpp file pattern for Doxygen
Bump version to 0.1.0
Add documentation main page
Fix relative path include
Bump version to 0.1.2