Not able to connect to elastic versions 5.X.X

[chitaks]

Hello!
I am trying to connect to elastic server with version 5.3.0 and run SQL queries.
I am getting following error on server side .

[2018-10-15T12:37:06,482][WARN ][o.e.t.n.Netty4Transport ] [gIaF784] exception caught on transport layer [[id: 0x294d658d, L:/10.54.135.59:9300 - R:/1
0.54.135.59:52665]], closing connection
java.lang.IllegalStateException: Received message from unsupported version: [2.0.0] minimal compatible version is: [5.0.0]
at org.elasticsearch.transport.TcpTransport.messageReceived(TcpTransport.java:1323) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.transport.netty4.Netty4MessageChannelHandler.channelRead(Netty4MessageChannelHandler.java:74) ~[transport-netty4-5.3.0.jar
:5.3.0]

I understand that support for later versions of elastic is not yet available.
When will the new release be available? Or is there any other way to bypass it.
I tried compiling the master branch code and use the jar, still not able to connect.

I am getting the following error on client side when connecting using mater branch,

Exception in thread "main" java.lang.NoClassDefFoundError: org/elasticsearch/client/transport/TransportClient
at nl.anchormen.sql4es.jdbc.ESDriver.connect(ESDriver.java:47)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:270)
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.client.transport.TransportClient
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 4 more