Code review comment for lp:~andreas-pokorny/mir/fix-1531517

> I find it hard to follow the logic in the main loop, although this could just
> be a result of my unfamiliarity with the domain. Perhaps breaking up the code
> into multiple distinct passes over the touch points, each pass performing a
> simple task and setting up state for the next pass, would make the code
> clearer.
>
> I don't see anything wrong with the code, but I am not confident enough to
> "approve" either, so "abstain" :)

fair enough.
Hm I cannot see a simple solution .. I have three types up:
* up contacts have to be sent as change events until they have been processed then they have to be ignored.
* change contact are added always
* down contacts have to be omitted until they get processed.. then they have to be sent as change contacts..

ah.. yeah i guess that could turn into simpler code. Will give it a try.