Changes

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Do not restrict Camera Yaw Values in GuiEditKeyframe

GuiReplayOverlay: The Keyframe Timeline should be zoomed in more initially
Do not reset Timeline whenever resetUI is called, only if "deep" reset

Adjust MARKER_DISTANCE value in GuiTimeline to avoid visual glitches

Added getLinearInterpolator() and getCubicInterpolator() methods to KeyframeValue interface to allow for specific Interpolators instead of the Generic Interpolators
Created InterpolationUtils class with a method to fix the Euler Rotation Break problem
Create AdvancedPositionSplineInterpolation and AdvancedPositionLinearInterpolation which always use the shortest possible paths between the Euler Rotation values of the Camera's Yaw and Roll
Remove Position Keyframe filtering when adding the Keyframe. This is now done by the AdvancedPositionInterpolation classes

Added implementations for Quaternions to represent rotation values and Interpolators using the Slerp/Lerp algorithm
We might remove this later as it isn't used and requires the Apache Commons Math Library