919 - Points is a valid rangeType for category axis

Closes #919
this is a silly unit test... it is totally path dependent, it basically checks to make sure that we had this commit but does not verify anything about the library.

for example, suppose if we had previously had a weird commit that made Plots throw an error if somebody puts in "narwhal" as an attribute to Plot.project. Then we have the narwhal fixing commit. Would we add a unit test making sure it doesn't throw narwhal exceptions?