Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
A constraint was added to specify the maximum days
per week for an interval for teachers and
students. This can be used, for example, to
specify that teachers and students must not work
more than 2 times per week in the last hours of
the day. A constraint was added to specify for a
group of activities that they should end the day
for students. When modifying a constraint's
(sub)activities preferred starting times or time
slots, the activity tag is now correctly updated.