Removed PostSharp attributes used during presentation.
Fixes.
Upgraded ping-pong demo to PostSharp 3.
Merge branch 'master' into before-presentation
Improved Actor examples.
Added freezable pattern.
Fixed Actor test and did a few smaller changes.
Some cleaning.
Fixed Actor demo.
Commenting Actor code.
Remove stuff that must be added during the talk.
Remove implementation of IFreezable.
Addding changes done during the presentation.