WIP passing string ref back to C#
Merge branch 'master' into SharingData

Conflicts:
	ExampleApp/Assets/Game/Entrypoint.cs
Handling case where user disables gamecenter
WIP "sharing" string data.
Merge branch 'master' into SharingData
meta files
mocking some data in editor so it runs (in editor)
Merge branch 'master' into SharingData
WIP keeping C#/objC wallets in sync
WIP parsing wallet info from objc
Sync up first pass
reexport
removing somedebug
WIP big refactor step 1 to how we're doing handlers
End to end User retrieval w/ new callback methods working on device
Generalizing some boilerplate
Eliminating some more boilerplate and using new callback flow for wallets
Native side of new wallet listener scheme
Refactoring the Binding class
Refactoring main Arbiter class