changed GridEditor cursor z position so it works better at bigger sca…

…les when in 3d.

ursina/prefabs/grid_editor.py

@@ -25,7 +25,7 @@ def __init__(self, size=(32,32), palette=(' ', '#', '|', 'o'), canvas_color=colo
 
         self.gizmo_parent = Entity(parent=self.canvas, scale=(1/self.w, 1/self.h))
         self.cursor = Entity(parent=self.gizmo_parent)
-        self.cursor_graphics = Entity(parent=self.cursor, model=Quad(segments=0, mode='line', thickness=2), origin=(-.5,-.5), color=hsv(120,1,1,.5), z=0, shader=unlit_shader)
+        self.cursor_graphics = Entity(parent=self.cursor, model=Quad(segments=0, mode='line', thickness=2), origin=(-.5,-.5), color=hsv(120,1,1,.5), z=-.02, shader=unlit_shader)
 
         self.selected_char = palette[1]
         self.palette = palette