Merge pull request #16 from Maxiebyte/test

More tests.
Fixed FindBugs warnings in net.maxiebyte.logging package.
Fixed FindBugs warnings in net.maxiebyte.logging.formatters package.
Fixed FindBugs warnings in other packages.

Closes #17.
Added more Javadoc for the classes in the net.maxiebyte.logging package.

The Javadoc tool issues some warnings.
Fixed Javadoc warnings.
Merge branches 'FindBugs' and 'javadoc'
Added Javadoc for net.maxiebyte.logging.formatters and fixed SGMLFormatter bug.
Create CONTRIBUTING.md
Added more Javadoc for the net.maxiebyte.logging package.

Closes #13.
Merge pull request #18 from Maxiebyte/javadoc

Javadoc
Added net.maxiebyte.logging.config package with basic classes.
Changed some config classes.
Changed some config classes and added MapMapConfigurationLoader.
Merge pull request #21 from Maxiebyte/config/yaml

Changed some config classes and added MapMapConfigurationLoader.
Merge pull request #20 from Maxiebyte/config/trunk

Merge config/trunk into master.
Added YAMLFormatter.
Fixed semantic bugs.
Replaced List with Set.
Added more annotations.

and removed one field and two methods.