This is how we use Keys. PublicKey.asBitcoinAddress() -> PublicKey.bytesAsString().
We now depend on bitcoij. This dependency might be moved to the core in the future.
PublicKey.asBitcoinAddress() -> PublicKey.bytesAsString()
Keys implementation using bitcoinj's ECKey (elliptic curve key).
Private keys are now random, not deterministic.
Merge branch 'master' of github.com:sneerteam/sneer

Conflicts:
	android/android.main/src/sneer/android/main/ui/ContactActivity.java