some improvements#11

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fredlllll wants to merge 3 commits intoPaulStoffregen:masterfrom

fredlllll:master

Commits on May 29, 2016

Commits on Jun 2, 2016

added function for setperiod to restart the timer when setting period (had some trouble cause i didnt do it after setting period, so i thought it would be nice to have it in this method)
fredlllll
committed