Version 3.2

Hi Toby,

This version fixes a number of minor bugs and implements some best practices.

Changelog:
* [Bug fix] filters on plugins_url() could not be applied, fixed
* [Bug fix] for upgrade routine not running on (re-)activation of the plugin
* [Bug fix] Small optimization in link matching regex which should prevent an edge case bug. Thanks [ts_sklett for reporting](http://wordpress.org/support/topic/no-icon-when-a-link-and-text-present-repro-steps-included).
* [Bug fix] Fix icon spacing issue as reported by [blitz fahrradmanufaktur](http://wordpress.org/support/topic/plugin-produces-space-above-linked-images)

And further:
* Fully leveraged the Options API
* Upped the minimum WP level to fully take advantage of new functions and APIs
* Tested up to WP 3.8-beta
* Code style validated against WordPress standards
* Added API documentation
* One time only force update of internal domains option
* Improved charset support for settings page
* Small improvements in validation
* Removed auto-deactivation if run on old versions (was buggy)
* Various small code tweaks