One nice new feature added, and a couple of fixes...
Added: Choose your folder!
Yep, several of you asked for this, and it is definitely helpful. When you save a script to Google Drive, you get the chance to pick the folder it should go in. Check a box to save this as your "Default" folder too, so it gets its own view in the dialog you use when you open a script from Drive. I'll probably add a menu option to directly set the default folder soon, but this and some behind the scene changes were enough to bump the revision number from 3 to 4. Roll on 1.0, eh?
Fixed: Some smaller Chromebooks (mine, for instance) had a bug where you couldn't always move downwards off the last line of a multiline paragraph using the arrow keys. You can now.
Fixed: In Firefox, if you used Ctrl-Tab to switch browser-tab, you'd likely come back to find that in doing so, you'd changed the type of an element. Not no more, you won't.
Let me know about any problems you find, or any suggestions you have.