Fixed a bug that the vMax key did not take effect for the number input type.
Fixed a bug that checkbox value for meta boxes did not get saved.
Added an example of the use of the "set_cell_ + post type + column key" filter to set custom column in the post listing table.
Added the fixNumber() utility method.
Changed the set_cell_{post type}_{column header key} action hook to cell_{post type}_{column header key} filter hook.
- Added the style_ {extended class name} filter for the custom post type admin pages.
- Fixed a bug that specifying a screen icon did not work as it was checking the file path while a url was passed.