bugfix Vec2D.jitter(), now returning Vec2D (instead of ReadonlyVec2D)
bugfix Vec2D.jitter(), now returning Vec2D (instead of ReadonlyVec2D)

--HG--
branch : toxiclibs

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