Add changelog entry for CassandraAppender
<action issue="LOG4J2-1302" dev="rpopma" type="update">
The log4j-slf4j-impl module now declares a runtime dependency on log4j-core. While not technically required, this makes the log4j-slf4j-impl module behave similarly to slf4j-log4j12, and facilitates migration to Log4j 2.
</action>
+ <action issue="LOG4J2-1730" dev="mattsicker" type="add">
+ Add Apache Cassandra appender.
+ </action>
<action issue="LOG4J2-1759" dev="mattsicker" type="add">
Add TypeConverter for java.util.UUID.
</action>
