Change ewma2 filter to compare filtered delta vs learned noise to
dynamically adjust filtering for each channel.
Merge branch 'master' of https://github.com/opentrack/opentrack into dev/ewma2
Merge branch 'tidy/ewma2' into dev/ewma2
Merge branch 'master' of https://github.com/opentrack/opentrack into dev/ewma2

Resolved conflicts manually in files:
	ftnoir_filter_ewma2/ftnoir_filter_ewma2.cpp
	ftnoir_filter_ewma2/ftnoir_filter_ewma2.h
Remove DOS line terminators from ftnoir_filter_ewma2.{cpp,h}.
Merge pull request #33 from dbaarda/dev/ewma2

Improve ewma2 filter.