Made sure all image sizes are available
Fixed spelling mistake
Moved template tags out of class wrapper

Since these are only used within templates, it makes more sense to just
prefix them and allow direct access. This should simplify the process
of editing templates when people want to modify them in their themes.
Removed references to helper class
Added new template tags
Minor refactoring and renaming
Added a base widget class

In an effort to reduce the amount of duplicate code in the plugin, I’ve
added a base widget class which is designed to be extended. This can
probably still be improved, but it’s a good start.
Removed custom class setting

This isn’t being used for now. I may look at adding it back in at some
point if it seems worthwhile.
Updated URLs
Version bump
Ensured compatibility with non-hybrid themes

Although this plugin will probably be used with Flagship themes 99% of
the time, I’d like it to be compatible with any theme.
Added menu order sorting option
Merge branch 'develop'