Release tablib 1.0

[claudep]

Hey @hugovk, what about a tablib release? Time for 1.0?

[hugovk]

Yes, let's go for it!

Perhaps include #445 first?

[hugovk]

Would you like to do this one?

The automation makes it quite easy, here's the release checklist.

https://github.com/jazzband/tablib/blob/master/RELEASING.md

Is there anything else needed for merging before release?

[claudep]

Hopefully done right!

[hugovk]

Looks good, I can see the wheel and source here:

https://pypi.org/project/tablib/1.0.0/#files

Thanks!