bugfix/supported_files

[BrianWhitneyAI]

Description

The purpose of this PR is to distinguish glob files from tiff files in _is_supported_image() by calling the init directly. This Pr also adds some error handling to the init so that if the file fails to initialize it will raise an UnsupportedFileFormatError. This PR is half of a response to #7.

How to Review

This PR looks larger than it is due to wrapping the init in try/except. Please look at the _is_supported_image() and the specific error handling for the init.

[evamaxfield]

I haven't looked at this reader in a long while but I think this all makes sense to me. The largest change here is the addition of the try + except correct?

[BrianWhitneyAI]

I haven't looked at this reader in a long while but I think this all makes sense to me. The largest change here is the addition of the try + except correct?

I think the bigger thing is calling the init from the is_supported_reader(). We had some users that were getting false positives that was messing with their base tiff reader. This calls the Init in is_supported_reader() because the init is complex and we do not have a simple way to confirm that all the operations of our init are functional (thus supporting).

[SeanLeRoy]

yay!