Changed URL to git repo in documentation
removed option to get quaternion matrix for passive non-unit-quaternions, enum class UsageType moved from common.hpp to RotationBase.hpp
added unit tests for Quaternion::vector() and Quaternion::Quaternion(Vector4)
Merge branch 'develop' of github.com:ethz-asl/kindr into develop
Merge pull request #3 from ethz-asl/develop

Develop