Maven Finalization

* Replaced majority of plugins with jarjar which more quickly builds
project in about 5 seconds
* Still using single jar, now includes all maven artifacts for
slf4j/logback/tomcat-juli
* Dropped support of building out javadoc & sources as jarjar is working
against classes only

Additionally, brought up changelog to include all missing items and
fixed mistakes.
Merge pull request #25 from hazendaz/maven

Maven Finalization