Prevent corrupt workspace state by adding
`keepReference` and `removeAfterUse` blocks altered to return void

These two blocks ought to be the last block on a chain
Add class for backward compatibility, with deprecation warnings

You will need to `#import <EEEInjector/EEEBackwardCompatibleMapping.h>`, but your app will require minimal changes to keep running.
Add comments to the deprecated methods
Bump version for backward compatibility feature
Merge pull request #7 from epologee/backward-compatibility

Backward compatibility injection mapping
Add new empty iPhone project