use latest html repr for neurodata objects

[bendichter]

I noticed a few places like this in the notebooks where you are printing neurodata objects. This is totally fine to so, but I wanted to make you aware of a new feature that you might prefer. With the latest version of PyNWB, now you can repr an object (the last line would change from print(eye_tracking) to simply eye_tracking) and it will output an interactive tree that represents the entire neurodata object, e.g.

[rcpeene]

Ah, thanks for letting us know! I just happened to notice this on Friday as well. Will make these changes.