Add makeNotation argument to test utility

[jacobtylerwalls]

I finally could ignore this no longer! Add a makeNotation=True default to test helper getET to encourage most unit tests to go through the usual codepath. Make explicit where existing tests actually depended on notation not being made.

[coveralls]

Coverage increased (+0.006%) to 93.028% when pulling ba8247b on getET into 1a0ec50 on master.

[mscuthbert]

thank you. this is what I should've done from the beginning.