[RELEASE] Java driver 3.0.3

[Olivier Michallat]

We've just released 3.0.3, a patch version which addresses the following issues:

- [improvement] JAVA-1147: Upgrade Netty to 4.0.37.

- [bug] JAVA-1213: Allow updates and inserts to BLOB column using read-only ByteBuffer.

- [bug] JAVA-1209: ProtocolOptions.getProtocolVersion() should return null instead of throwing NPE if Cluster has not

        been init'd.

- [improvement] JAVA-1204: Update documentation to indicate tcnative version requirement.

- [bug] JAVA-1186: Fix duplicated hosts in DCAwarePolicy warn message.

- [bug] JAVA-1187: Fix warning message when local CL used with RoundRobinPolicy.

- [improvement] JAVA-1175: Warn if DCAwarePolicy configuration is inconsistent.

- [bug] JAVA-1139: ConnectionException.getMessage() throws NPE if address is null.

- [bug] JAVA-1202: Handle null rpc_address when checking schema agreement.

- [improvement] JAVA-1198: Document that BoundStatement is not thread-safe.

- [improvement] JAVA-1200: Upgrade LZ4 to 1.3.0.

- [bug] JAVA-1232: Fix NPE in IdempotenceAwareRetryPolicy.isIdempotent.

- [improvement] JAVA-1227: Document "SELECT *" issue with prepared statement.

- [bug] JAVA-1160: Fix NPE in VersionNumber.getPreReleaseLabels().

- [improvement] JAVA-1126: Handle schema changes in Mapper.

- [bug] JAVA-1193: Refresh token and replica metadata synchronously when schema is altered.

- [bug] JAVA-1120: Skip schema refresh debouncer when checking for agreement as a result of schema change made by client.

- [improvement] JAVA-1242: Fix driver-core dependency in driver-stress

- [improvement] JAVA-1235: Move the query to the end of "re-preparing .." log message as a key value.

As usual, the driver is available from Maven and as a binary tarball; see the "Getting the driver" section in our online documentation:

https://github.com/datastax/java-driver/blob/3.0.3/README.md#getting-the-driver

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The Java driver team