Added dither and stroke cursors. The line on the stroke cursor is quite
hard to see, but I think that's pretty unaviodable. I would suggest
moving to a larger cursor size.
Added an icon for the lighting tool, although it's somewhat difficult to
see what it is without looking closely. I'd love to hear other ideas for
a cursor. (See juliandescottes/piskel#351)
I also reworked the hit point of the existing cursors by a few pixels.
Added feature to merge a layer with the layer below
Done at #jsconfeu2014 :)
New icon in icons : merge-icon.png
TODO : reorder the icons folder, it's waaaaaaay too messy !!
Added new tool to lighten/darken. By default is in lightening mode. If the
user holds ctrl/cmd while using the tool, switches to darkening mode.
If the user holds shift while using the tool, then each pixel can only be
modified once per tool usage (ie user keeps hovering the same pixel, it
won't get lighter/darker after the first time). Can be useful if you want
to keep control of the amount of colors in the sprite.
TODO :
- Ability to select explicitly lighten/darken (context menu for
tools).
- Ability to set the 'step' (ie the strength of the lighten/darken)
