To use these scripts, simply place them in your BBEdit Scripts folder. (By default, it's in ~/Library/Application Support/BBEdit/Scripts/ . If you're using Dropbox syncing, it's in ~/Dropbox/Application Support/BBEdit/Scripts/ .) I consider them public domain.
If you want to invoke a script with a keystroke, after you've added the script to your Scripts folder, use BBEdit Preferences (Menus & Shortcuts, it will be under the Scripts menu). Find the script in the list, then click to the right of it on its line, and assign a keystroke.)
These have been added to the BBEdit Extras wiki. These scripts are written by me for my personal use, and are not official Bare Bones scripts.