This PR was merged a while back, but GitHub still has it open.

Related to LOG4J2-1862.

This allows a whitelist of class names to be specified to configure
which classes are allowed to be deserialized in both TcpSocketServer and
UdpSocketServer.

The default value of RandomAccessFileAppender.Builder append field is
wrong.

CassandraDaemon attempts to call System.exit() on Windows, so this patch
prevents calls to System.exit() while stopping the daemon.

This was fixed in 2.8.1, but no changelog entry was ever added.

This adds an escape format option to EncodingPatternConverter to allow
for either HTML or JSON as the escape format. This converter can be
useful for creating custom JSON layouts via a pattern layout.

This closes #65.

Also sorts the changelog a little bit to keep fixes together.

This closes #61.

Also added notes about related missing documentation.