Updated README and plugin
Added the ability to sort the export columns (for entries only currently)
Paved the way for easily adding more element types
Category export added
Just enable sorting for now, we'll be saving preferences later
Cleanup
Category export bugfix (name)
Upgraded the plugin and README to 0.3.0
Fixed phpunit tests
Export all entrytypes at once
Fixed phpunit bug
Some more phpunit fixes
Updated README and plugin
Merge branch 'master' into release/airbp