=========
* Added new attribute to WorkingHours class called ``weekly_working_hours``,
which calculates the weekly working hours based on the working hours defined
in the instance.
* Task class now has a new attribute called ``schedule_timing`` which is
replacing the ``effort``, ``length`` and ``duration`` attributes. Together
with the ``schedule_model`` attribute it will be used in scheduling the Task.
* Updated the config system to the one used in oyProjectManager (based on
Sphinx config system). Now to reach the defaults::
instead of doing the following
from stalker.conf import defaults not valid anymore
use this
from stalker import defaults
If the above idiom is used, the old ``defaults`` module behaviour is
retained, so no code change is required other than the new lower case config
variable names.