- Gerber Editor: made Add Pad repeat until user exits the Add Pad through either mouse right click, or ESC key or deselecting the Add Pad menu item

- Gerber and Geometry Editors: fixed some issues with the Add Arc/Add Semidisc; in mode 132, the norm() function was not the one from numpy but from a FlatCAM Class. Also fixed some of the texts and made sure that when changing the mode, the current points are reset to prepare for the newly selected mode.

camlib.py

@@ -7701,7 +7701,11 @@ def three_point_circle(p1, p2, p3):
     b2 = dot((p3 - p2), array([[0, 1], [-1, 0]], dtype=float32))
 
     # Params
-    T = solve(transpose(array([-b1, b2])), a1 - a2)
+    try:
+        T = solve(transpose(array([-b1, b2])), a1 - a2)
+    except Exception as e:
+        log.debug("camlib.three_point_circle() --> %s" % str(e))
+        return
 
     # Center
     center = a1 + b1 * T[0]