Removed unused enacl lib. Use eblake2 for hash. (#8)

* Removed unused lib.

* Replace local blake2 implementation with eblake2.

* Add eblake2 dep to app file.

* Add eblake2 to rebar config.

* Use hex for eblake2.

* Bump version.

* Replace local rlp with aeserialization repo. Use ref till first release is available.

* Remove unused vars.

test/aeb_fate_asm_test.erl

@@ -54,12 +54,12 @@ sources() ->
 
 check_roundtrip(File) ->
     AssemblerCode = read_file(File),
-    {Env, ByteCode} = assemble(AssemblerCode),
+    {_Env, ByteCode} = assemble(AssemblerCode),
     FateCode = disassemble(ByteCode),
     DissasmCode = aeb_fate_asm:to_asm(FateCode),
     io:format("~s~n", [AssemblerCode]),
     io:format("~s~n", [DissasmCode]),
-    {Env2, ByteCode2} = assemble(DissasmCode),
+    {_Env2, ByteCode2} = assemble(DissasmCode),
     Code1 = aeb_fate_asm:strip(ByteCode),
     Code2 = aeb_fate_asm:strip(ByteCode2),
     ?assertEqual(Code1, Code2).