Tidy and optimize ewma2 filter.
Tidy up tabs in ewma2 filter.
Merge branch 'master' of https://github.com/opentrack/opentrack
Merge branch 'master' of https://github.com/opentrack/opentrack
Merge branch 'master' of https://github.com/opentrack/opentrack
Merge branch 'master' of https://github.com/opentrack/opentrack
Merge branch 'master' of https://github.com/opentrack/opentrack into tidy/ewma2
Merge pull request #1 from dbaarda/tidy/ewma2

Tidy/ewma2