Issue #1512144 by realityloop: allow multiple deepzoom elements to be displayed at once.
Added deepzoom.makefile to automatically download the seadragon library if deepzoom is installed via a makefile
#1702124: Added cacheable JS configuration.
Fixed typo in menu path.
Added File field formatter.
Added help documentation.
Added a modular engine system.
Removed dependency on Image module.
Removed dependency on Seadragon Ajax library.
Added support for OpenSeadragon.
Updated generation for smaller derivatives.
Removed makefile.
Added makefile entries documentation.
Added Drush command to download library.
Removed dependency on Libraries API module.
Updated handling when libraries are missing.