Dev Build 2099
is out now.
The biggest change isn't listed in the changelog: there's a new selector matching implementation that's faster, and should rank scopes using an equivalent algorithm to TextMate. Let me know if you see any issues.
Along with the new selector implementation, there are several new API functions to expose the selector scoring function (allowing multiple selectors to be ranked vs a scope), adding the ability to select with arbitrary selectors and scope names (rather than having to source a scope name from a point in a view), and being able to search the buffer for regions matching a given selector (e.g., view.find_by_selector("comment") will give you all the commented out regions).
Vintage is better behaved now, too, especially visual mode.