2.5.0: 2019-04-30
    - Fix error where a selected FileSet does not exist anymore
    - add filtering feature for page list galleries
2.4.6:
    - Fix issue on PHP 7.2
2.4.2:
    - Change container class name (.grid to .whale-grid-gallery-container) as it was too general and caused css interference in many cases
2.4.0:
    - Add new option: 'Disable Lightbox on Mobile'
2.3.1:
    - Add Caption Position    
2.3.0:
    - Add Page List Gallery
2.2.0:
    - Add Button
2.0.0: Redesign add-on
1.0.0: Initial Release