Enable debug output when exception is thrown
Implement inherited methods of filters
Add BlurFilterTest
Merge master into FilterFlamingo
Add clamp function to MathHelper
Implement MixFilter
Add MixFilter tests
Merge master into FilterFlamingo
Implement RescaleFilter
Fix wrong YUV type in MixFilterTest
Add RescaleFilter testcases
Merge branch 'FilterFlamingo' into jonas