rearranged project method in xyrenderer to make x/y scales autodomain
changed padding for quantitive scales to deal with case where start and end are same
close #376
close #423
close #458
Update built files
special case to return immediately when start and end equal
Update built files
Merge branch 'master' into padding
Update built files
Merge pull request #466 from palantir/padding

X/Y scales will now autopad/autonice