added Material with setter functions
added basic Particle stub
adjusted Material constructor to take dat.Gui folder as parameter
added stub for a grid Node
added Simulator stub implementation
(sub-) library for fluid simulation
added system to simulate fluids
included Jiquid library into Bloob main html
enabled updating a given fluid system in Layer
updated test maps to include fluid test
refactored x and y members into a Jello.Vector2
added example fluid system to specific layer in MapBuilder
refactored minX, minY, ... into a single Jello.AABB
removed nodes array
use Jello.AABB operations instead of manually assigning new minimum and
maximum values
refactored u and v into a velocity Jello.Vector2
added dat.Gui support for the Material's color
refactored ax and ay into an acceleration Jello.Vector2 in Jiquid.Node
added names of the Layers in debug panel
refactored gsizeY into System object