Presence is now a 'abstract' View, pull in members from program
This is signified by the removal of params['name'] and other values
that are required by params.py, but also by the removal of the 'view'
definition at the bottom of the file.
Patch by: Sverre Rabbelier
Coverage: code coverage testing for Python
Coverage.py is a Python module that measures code coverage during test execution.
It uses the code analysis tools and tracing hooks provided in the Python standard
library to determine which lines are executable, and which have been executed.
For more information, see http://nedbatchelder.com/code/modules/coverage.html