Add a python script that executes an external bash script ...

...on microbreak start and another on successfull completion of the microbreak without postpone/Skip.

I want to call my mouse-speed script on a microbreak and it works like this already, but It always resets the timer, o matter if I did the microbreak or if i skipped it.

related bug: http://issues.workrave.org/show_bug.cgi?id=1099

There you say 

> you can use GetTimerElapsed/GetTimerIdle to figure this out

How can I achieve this?