New methods to get frameTime and frameRate:

- getFrameTime(int range) : std::chrono::milliseconds
- getFrameRate(int range) : float
Updated internal.h + Added additional files
Callbacks finally working!
Callback-Functions available
Changed parameter order for callbacks
New method: removeCallbacks() : void
New method: size() : int
Changed method: dispatchEvent() : void
Updated Animations.. WIP
[STRG][SHIFT]+F
Updated animator - partially working - WIP
New method: orient(glm::vec3 orientation) : void
Animator class working as intended!
Added _addCallback to namespace detail
Merge branch 'feature/Animations' into develop
Merge branch 'release/0.1'