function Canvas.isFull(R)for R,l in ipairs(R.spots)do if not l:hasArt()then return false end end return true end
--[[
	Returns true if the canvas is currently full.
]]
function Canvas:isFull()
	for _, spot in ipairs(self.spots) do
		if not spot:hasArt() then
			return false
		end
	end

	return true
end
