ToDo

- Save current gallery (zip)
- Views: Gallery / Details / Lightbox
- Details: populate fields
- toolbar -- floating over gallery
	- lightbox (current)
	- info (current)
	- select / deselect (current / all)
	- delete / clear deleted (current / all)
	- crop
	- load
- toolbar -- floating over image (gallery/lightbox/details/...)
	- lightbox
	- info
	- select / deselect
	- delete
- Lightbox: hover indicators: 
	- start/end (a-la ImageGrid.Viewer??)
	- next/prev
	- count
	- selection
- Gallery: Adaptable image justification in grid
- Gallery: Spacial navigation (up/down/left/right)
	- auto focus image iff the gallery is visible
		- handle focus / tabindex (???)
	- option: .loop_images
	- Up/Down: might be a good idea to select an image based on 
	  longest border instead of closest center (current)...
- Gallery: PageUp/PageDown, home/end + allow page navigation
- Gallery: focus visible...
- Gallery/Lightbox: Selection of images (space / ctrl-a / ctrl-d / ctrl-i)
	- Lightbox: show selection marker
- Gallery: constructor...
	Gallery([options])
	Gallery(urls[, options])
	Gallery(dom[, options])
	Gallery(dom, urls[, options])
- Gallery: view crop
	- open/change/close
	- crop stack (a-la ImageGrid.Viewer)
	- actions:
		- "from selection"
- Gallery: drag-n-drop
	- drop files/images -- add loading indicator
	- drag to sort
	- drag marked
	- styling...
- Gallery: remove image
	- basic delete
	- delete marked
	- mark images for deletion + delete marked
	- UI/toolbar
- Gallery: serialize / deserialize
- Lightbox: navigation (keyboard / mouse)
- Lightbox: fullscreen mode
- Gallery: element (???)
- Would be nice to retain the scroll position on refresh...
- ...

Keyboard controls

    Left / Reight   - Previos / next image
    Up / Down       - Image above / below
    Space           - Mark image (also shift-click)
    Ctrl-A          - Mark all images
    Ctrl-D          - Unmark all images
    Ctrl-I          - Reverse image marks
    Enter           - Toggle lightbox
    Esc             - Close image info or lightbox
    Delete          - Toggle image / marked for deletion (toggle)
    Shift-Delete    - Delete marked image(s) or current if none are marked

NOTE: if the grid behaves in an odd way on resize tweak PATCH_MARGIN value,
	though this sould not be necessary.
	(optimal range >1 and <3)	
NOTE: the "basic actions" below are to be moved to the toolbar...

For more info see: README.md

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