Fixes with 1.0.2!

This fixes a regression where Control+Backspace would pop up an error message every time you pressed it, which emerged because I switched from the default build config to Release without thoroughly testing. I've fixed the error, and preemptively made the same changes everywhere in the code to prevent the same bug from emerging.

I tested this version much more, but I'd like to make a better test. Either a list of operations I'll test each time, or even an automated test suite.

Also, the source code is now the entire Git repository, allowing you to browse any previous versions.