resampling using doubles instead of floats
getsamples to combine some overhead and return multiple samples in one call
Add bisinc and bicubic
implement getsamples
Merge branch 'resampling' of https://github.com/lveci/beam into lveci-resampling
minor changes to ResamplingFactory
updated test for ResamplingFactory
allowed other resampling types
allowed more resampling types in collocation