Comment 4 for bug 1664834

I just pushed commit 9375e18fb66 which should fix the problem. There still may be some corner cases because there is about a dozen ways that the root alias gets updated which is really problematic. I still need to change the behavior of the plugin when removing or replacing aliases so it returns the next alias to the library editor. As of right now it always returns NULL which mean you have to select a new symbol to edit.