added a quicktest for the "origin points cut off"
last commit was before building finished
"don't pad beyond 0" only for bar plots #546
extents including Infinity throw exception
pad() on identical domain pads by 1 day
.setDomainerIfDefault() only on QuantitiveScale
scale.niceDomain() uses d3Scale.copy()
_niceDomain(), _setDomainIfDefault(), comments