- clean up
- the structnode ids must be int

- FasterList Clear has been renamed to FastClear. The standard Clear will clean the array like the normal List does
- An engine can now receive callback for when nodes are disabled and enabled
-

DispatcherOnChange and DispatcherOnSet now hold weakreferences of the actions
Ticker is now deprecated, a legacy copy will be found in the example
Added Engines Profiler Tool
Added the concept of Entity Group (more will follow on the subject in an article)
Handling the creation of entities inside the Add Methods
fixed some bugs
renamed namespace to Svelto.ECS
add the concept of ExtraImplementors for the EntityDescriptor

Updated Context and Ticker Framework
Added Datastructures

Ticker and Observer become part of the ECS framework
Add support for Unity 4