Low-pass filter
Merge branch 'master' of https://github.com/VMML/vmmlib
add_value method in lopass_filter
smooth_factor setter in lopass_filter
Merge cleanups
Minor cleanups
Renaming
Add lowpass filter to vmmlib.hpp
Comments
Fixes in filter impl
Merge branch 'master' of https://github.com/eile/vmmlib

Conflicts:
	include/vmmlib/lowpass_filter.hpp
Merge pull request #2 from jafyvilla/master

Doxygen comments
Merge pull request #34 from eile/master

Low pass filter implementation