Consider making osrelease stepwise

[LFISHER7]

When trying to link releases to output checking issues, I've noticed it is quite common to split a release into multiple releases (example here. This makes it a bit harder to track; ideally there would be a single release for each review.

I think this is because (though definitely worth confirming), if you have a release using multiple output patterns:

• Fixing a typo becomes annoying
• It is more challenging, when confirming the files to be released, to check you are only releasing what you want.

I think a way around this would be to make osrelease stepwise, where you enter a single file/pattern, press enter, confirm files to be released by that pattern and then confirm whether you would like to release more files. Repeat as necessary.