* Added crypto project and decoupled BitcoinSLogger from NetworkElement
Decoupled BitcoinSLogger from Factory
Moved NetworkElement into crypto project
Moved Factory and BitcoinSUtil (renamed to BytesUtil) to crypto project
Moved MaskedToString to crypto project
Added BytesUtil to imports and cleaned up CryptoUtil.recoverPoint
Moved the rest of crypto stuff to the crypto project
Moved crypto tests to crypto-test project
* Added documentation for crypto project
* Add wallet creation time for rescans
* Fix docs
* Clean up and add test
* Remove account bday
* Fix compile issue and docs
* Add more chain handler tests
* Use Instant over Long, add docs
* Fix docs
* Change NodeCallbacks to Future[Unit] s
* Fix compile issue
* Change try to future
* Change Future.sucessful(()) to FutureUtil.unit
* Callback failure handling, callback docs
* Create functions for executing callbacks, make merkleblock a future
* Convert MerkleBuffersTest to BitcoinSAsyncTest
* Fix compiler errors
* Reorder UpdateBloomFilter tests so that txFromWalletP is a success for both calls and the other test does not wait on the promise to complete
