Started work on rational resampler
Added the sample history update and FIR correlation for the rational resampler
Implemented RadioBlock for RationalResampler
Added test for RationalResampler, and initialized sample_history with zeros
Added more tests for RationalResampler, and changed the orientation of the taps for FilterFIR for consistency with the RationalResampler
Removed warnings and compilation failures with new nightly
Added low-pass filter tap calculation
Fixed bug in Hamming window generation
Added some documentation on low-pass filter generation
Added two different ways of specifying the number of taps in a low-pass filter
Added test for Hamming window, and fixed bug in implementation
Added test for low_pass filter with Hamming
Merge branch 'master' into file_source
File IO now works on any Copy type