Some misc patches I found possible when browsing the code

Some more misc changes.

… and even more…

I found some more unwrap()s that could be replaced with ? and some more format strings that could be optimized.

I found even more stuff that could be fixed, simplified and optimized.

Looks goog so far. Could you please group the commits by component (bin/patch, bin/issue, bin/ui, lib, etc…), squash and reword them, such that the commit messages have a prefix indicating component? E.g. bin/patch: Code improvements.

Adressed review comments.

Found some more format strings that could be simplified

Rebased.

Rebase