- add Snapshot with Take and Restore methods
- remove World.Transfer
- components can now be accessed via `ref`
- clients should call World.Dispose when they are done with a World
- rewrite ECS storage to use fewer classes
- all ECS storage methods now exposed in World
- removed filter callbacks
- removed MessageWithEntity methods
- various data structure optimizations
Reviewed-on: #6
- removed Snapshot system
- Entities can now be transferred between Worlds along with their Components and Relations using a Filter
- Entities can now be given a string tag on creation
- Manipulators can update an Entity's string tag
cosmonaut