Graphiti 0.9.36 released

+ rename class graphiti.EditPolcy to graphiti.command.CommandType
+ concept for drag&drop and other edit constraint handling: graphiti.policy.EditPolicy
+ new class DragDropEditPolicy
+ new class RegioEditPolicy
+ new class HorizontalEditPolicy
+ new class VerticalEditPolicy
+ new example for EditConstraint usage "edit_policy_constraint"