Ripped lots of stuff out of repository that wasn't needed.
More compacting of code, and added first set of unit tests.
Finished cleanup of SplunkCimLogEvent class and its unit tests.
Added automated testing against all three logging frameworks.
Rewrite functional tests to use log4j2, logback, and j.u.l. APIs directly.

Cannot get Maven to suppress dependencies for particular tests, so I can't
use the SLF4J facade for all three. Fortunately, it doesn't matter.
Wrote a TcpAppender class merging Damien's SplunkRawTcpAppender and
SocketAppender from logback.
Add and edit headers, comments, and other text.
Resolved dfoster's review comments and a few other tidbits.
Finished draft of installation and usage instructions in the README.

Fixed a couple typos in comments in source code.
Merge branch 'master' of github.com:splunk/splunk-library-javalogging into develop

Fixed pom problems.

Conflicts:
	pom.xml
Fixed pom.xml (small error).