Snippets - per collection settings

[strajk]

Mainly

 * abbreviation prefix

 * enabled in

 * autoexpand

 

Example from aText

 

[brianb]

I second this (the auto-expand per collection, specifically).  I have some collection of snippets that I never want auto expanded (they are just there for reference so I can bring them up with a keyword), and others I do want expanded, and this would make it much easier to do so.