Divide: fix test string
add Modulo component
modulo: fix modulo value when result is 0
MathComponent: don't emit values if output port is disconnected
add Round component
Update NoFlo
Merge branch 'master' of github.com:noflo/noflo-math
Floor: avoid errors when out ports is not connected
tests: add tests for Floor component
add Ceil component
add NanToZero component
add Boundary component
NoFlo manifest auto-updating
conflict resolve