Added 'TagString' test

[patilatharva]

This test ensures tag objects have the string representation: Tag(time=$time, microstep=$microstep)

[Soroosh129]

Hi @patilatharva

It looks like the test you've added is failing with the following error:

expected tag string representation: Tag(time=$time, microstep=$microstep), instead got: {tag_str}

Do you know why that might be?

[patilatharva]

This seems to be because the python target submodule wasn't updated. The git history is a bit messy now but I just updated so the test should pass. Also, thanks to your comment I noticed a formatting error in the error message, which I fixed as well.

[Soroosh129]

This seems to be because the python target submodule wasn't updated.

Ah I see.

The git history is a bit messy now.

No worries. We an squash the commits. Thanks for adding this feature!

[lhstrh]

@patilatharva: I looks like this PR has been under the radar for a while. Shall we bring it back into a state to where we can merge it? One issue with this PR is that I don't quite understand what it attempts to do, so if you could update the description to clarify, that would be a great first step. Thanks, and sorry for the delayed handling of this!

[patilatharva]

Yes, thanks for bringing this back to my attention! I'll make it ready for review.