* Added: Support for Categories export
* Added: Support for Tags export
* Added: Support for Users export
* Fixed: Display of multiple queued Admin notices
* Fixed: Limit volume for Users export
* Fixed: Offset for Users export
* Fixed: Sanitize form fields
* Fixed: Data validation on outputs
* Fixed: Add missing WordPress options for Plugin if not present on activation
* Added: Export type is remembered between screen refreshes

git-svn-id: https://plugins.svn.wordpress.org/exchange-addon-exporter/trunk@974630 b8457f37-d9ea-0310-8a92-e5e31aec5664