Changes for 3.0.10

• Fixed a regression from 3.0.5: the built-in AvoidsNodes Router was not calling the base method Router.canRoute.
• Unnecessary "Change not within a transaction" fix for images loading during animations.
• Fixed some animations that were erratically changing the Diagram position when a Diagram.contentAlignment is set.
• The AvoidsNodes router no longer routes during the default animation, and preserves AvoidsNodes routes during animation.