Fluence client (#51)

* WIP

* WIP, revert splitting modules, default arguments for kademlia and contracts

* WIP, join seeds, create dataset logic, testing

* WIP, fix test cases, contract allocation is working

* merge

* fix key array byte
fix hash functions in test
fix non-lazy task in Datasets cache
add MVarMapCache

* fix comments, add headers

* externalize auth client

* delete authCache

src/main/scala/fluence/crypto/algorithm/DumbSign.scala

@@ -14,6 +14,7 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
+
 package fluence.crypto.algorithm
 
 import java.security.SecureRandom

src/main/scala/fluence/crypto/cipher/Crypt.scala

@@ -17,6 +17,8 @@
 
 package fluence.crypto.cipher
 
+import scala.language.higherKinds
+
 /**
  * Base interface for encrypting/decrypting.
  * TODO: switch to Codec; notice that Crypt provides effect: decrypt may fail