You can now delete a selection

Don’t you hate clearing an area by going one-by-one through the tools and clearing each layer? Well now you don’t have to! Select the region, hit Backspace or Delete, and you’re done.

I also updated the help text for the Select tool to mention the new Copy + Paste functionality (and this new delete functionality) as well as fixed a hard-to-enounter bug.

Happy Shmepping ya’ll!