cprudhom/Galak — pull request #4 by cprudhom (2011-11-09 17:07:22+00:00)
Title: update the way propagator are informed of value removals

remove getters fromDelta and toDelta from requests.
Action on value removed should be done using #forEach(proc).
Advanced uses can be done using #forEach(proc, from, to) (eg. for
ConditionnalRequest)

GraphRequest throws exception! (a refactoring should be considered).