Python: Define dict conversion for IFD? #145
Description
It would be nicer to have an easier way to see what's in an IFD in Python.
Right now, every tag is a separate attribute, so you have to manually check all the attributes of an IFD to see what tags even exist. It should be possible to dump the IFD tag values into a dict.
If we think this makes sense, then we should be able to implement __iter__ and __getitem__ dunder methods on the IFD, which implements the Python "mapping protocol", which means dict(ifd) would work out of the box.