Fix breakage on empty query via .getAssn of a hasMany/through relationship
Version 0.5.12
Version 0.5.13
Better variable name, don't omit brackets
Don't rely on return value -- just for consistent use of this method
Use JSON datatype for objects in Postgres so values can be queryable
Merge branch 'v0.5'

Conflicts:
	lib/adapters/transformers/sql.js
Merge branch 'master' of github.com:geddy/model