* Update to v1.4
* Add 'About' section to help panel
* Move descriptive text from top of settings page into 'About' section of help panel
* Remove a bunch of pre-WP3.5 compatibility code
* Update plugin framework to 037
* Better singleton implementation:
    * Add `get_instance()` static method for returning/creating singleton instance
    * Make static variable 'instance' private
    * Make constructor protected
    * Make class final
    * Additional related changes in plugin framework (protected constructor, erroring `__clone()` and `__wakeup()`)
* Add checks to prevent execution of code if file is directly accessed
* Use explicit path for require_once()
* Discontinue use of PHP4-style constructor
* Discontinue use of explicit pass-by-reference for objects
* Minor documentation improvements
* Minor code reformatting (spacing, bracing)
* Note compatibility through WP 3.8+
* Drop compatibility with version of WP older than 3.6
* Update copyright date (2014)
* Regenerate .pot
* Change donate link
* Update screenshots
* Add banner



git-svn-id: https://plugins.svn.wordpress.org/remember-me-controls/trunk@838900 b8457f37-d9ea-0310-8a92-e5e31aec5664