Change filter order specification to filter taps number specification.
filter test written and passing
Merge branch 'master' of https://github.com/scalanlp/breeze into filter1
filterLP, filterHP, slight refactoring in parameter order
fourierShift/fourierFreq first shot
fourierShift moved out to extends UFunc, tests passing
Adjustments in convolve
Merge pull request #154 from ktakagaki/filter1

Filter1