* Now a Cel has a z-index property to change the order of layers per frame
* A new doc::RenderPlan class can calculate the order of cels to be rendered
* z-index is saved as a int16_t in the .aseprite files
* This new field can be set/get from Lua with Cel.zIndex
Added a Sprite.tileManagementPlugin property for plugins that want to
replace the standard tilemap/tileset interface. This includes a new
external file field in .aseprite files to specify that the sprite
tiles are controlled by a specific plugin.
Once this property is set, the standard tilemap/tileset modes
selectors will disappear and the only way to make then available will
be setting this property to nil/empty string again.
Fix https://github.com/aseprite/Attachment-System/issues/21
Some features from the beta branch of aseprite & laf were backported
to the main branch of aseprite.
Related commits:
- New memory handling (db4504e816ffccf0ea63a78737ebb6e22cc0453b)
- New get event with timeout (e6ec13cc31e6e689040bc651f98ee1752834d14c)
- Convert os::NativeCursor to an enum (06a5b4f3aebfafb6363ea33d349975d6e419ca7b)
- Adapt code to the new os::Display -> os::Window refactor (5d31314cdb23f314391e5eaebd7cea84f5179ac7)
- Save/load main window layout correctly and limit to current workarea (d6acb9e20f11fda938959c99285fe4f7d7051794)
- Redraw window immediately on "live resizing" (d0b39ebade7736d47e6b2450bf68b088c0da8e57)
In this way we always have an empty tile available in the drawing
process. We've also added the Tileset::firstVisibleIndex field to
change the visible index of the tile 1 so we can offset the visible
number by the user (just as a visual aid / simulate old tilesets with
index=0=non-empty tile).
