Fixed behavior on multiple merges after sorting
Yet another small bugfix for the automatic cluster merging
README update
Merge remote-tracking branch 'origin/master'
Fix chunking problems when external spike train is used
Merge branch 'master' of github.com:pmeier82/BOTMpy
Fix minimum cluster size check
* mad scaling
* mad scaling start
fixes issue with the covariance estimation, where very small data strips with high spiking will lead to empty epoch sets in the update procedure
Merge branch 'master' into mad_scaling

Conflicts:
	botmpy/nodes/spike_sorting.py
mteo will not set filter output to 0.0 for k-values that cannot be filtered (data.size < 4k+1)
median average deviation (MAD) scaling for tetrodes that have dramatic difference in noise background amplitude.
median average deviation (MAD) scaling, for tetrode recordings that have dramatical differences in background noise amplitude
Merge branch 'master' of https://github.com/pmeier82/BOTMpy
SpectrumArtifactDetector: padding parameter added