works with r2.mat
changed yytpeak to fly
updated r2.mat
added cluster.pickle in which cluster number of the sample is saved
added cluster plotting function
added kuramoto for peak phase
before creating new peak detection method
added new peak detection
after success of peak detection
editing calc_phase
before discussion
edited lowpassed scale
editing calc_phase
editing calc_phase (phase velocity ignored)
edited calc_phase as vel ignored
ready to merge with peak
merge of peak and cluster