feat: add 4731 label size

AveryLabels.py

@@ -25,6 +25,8 @@ labelInfo = {
     # 22x 32mm x 10mm mini labels
     3044: ( 2, 11, (32, 10), (2,2), (1, 1), (66.5*mm, 120.5*mm)),
 
+    # 189x 25.4mm x 10mm mini labels
+    4731: ( 7, 27, (25.4*mm, 10*mm), (2.5*mm, 0), (9*mm, 13.5*mm), A4),
     # 2.6 x 1 address labels
     5160: ( 3, 10, (187,  72), (11, 0), (14, 36), A4),
     5161: ( 2, 10, (288,  72), (0, 0), (18, 36), A4),
@@ -127,4 +129,5 @@ class AveryLabel:
                 canv.rect( 0, 0, self.size[0], self.size[1] )
             func( canv, self.size[0], self.size[1], chunk )
             canv.restoreState()
-            self.advance()
+            self.advance()
+