ToDo

- Views:
	- Gallery
	- Details
	- Lightbox
- toolbar
	- select / deselect
	- delete / clear deleted
	- crop
	- load
- Lightbox: indicators: 
	- start/end (a-la ImageGrid.Viewer??)
	- next/prev
	- count
	- selection
- Gallery: Adaptable image justification in grid
	- Make more accurate -- align right side to pixel...
	- Can we make this passive??? (i.e. CSS only... likely not as flexible...)
- 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
	- drag to sort
- Gallery: remove image
	- UI: mark images for deletion + delete marked
- Gallery: serialize / deserialize
- Lightbox: navigation (keyboard / mouse)
- Lightbox: fullscreen mode
- Gallery: element (???)
- Would be nice to retain the scroll position on refresh...
- ...