added sorting of transactions through sorted sets

0.0.4

added sorting through sorted sets

memory store has now correct utxo and getTx(addresses) works

0.0.3

moved the unit tests to the test folder

getTransactions with DB

show all Tx with the user's address involvement.

2 issues for

• missing input Tx
• calculate balance, for which utxo handling is required

Migrated to BitcoindClient4j.milansismanovic library

getTransaction needs to be finished

0.0.0

abandoned ConsensusJ approach.

Errors can be seen in the BitcoinExtendedClientTest2 unit test, where getBlock fails to deserialize with two different issues.