various updates to MathUtils: adding roundTo() for flexible precision rounding/grid snapping, flipCoin() now uses MathUtils default RND generator, floor(double) now returns long (to avoid bugs with large values), removing obsolete (and already deprecated) fastFloor() method
various updates to MathUtils: adding roundTo() for flexible precision rounding/grid snapping, flipCoin() now uses MathUtils default RND generator, floor(double) now returns long (to avoid bugs with large values), removing obsolete (and already deprecated) fastFloor() method

--HG--
branch : toxiclibs

rekii/toxiclibs,postspectacular/toxiclibs,rekii/toxiclibs,ruby-processing/toxiclibs,postspectacular/toxiclibs