- modified the Distance Tool such that the numbe of decimals all over the tool is set in one place by the self.decimals

- added a new tool named Minimum Distance Tool who will calculate the minimum distance between two objects; key shortcut: SHIFT + M
- finished the Minimum Distance Tool in case of using it at the object level (not in Editors)

flatcamTools/ToolOptimal.py

@@ -1,3 +1,11 @@
+# ##########################################################
+# FlatCAM: 2D Post-processing for Manufacturing            #
+# http://flatcam.org                                       #
+# File Author: Marius Adrian Stanciu (c)                   #
+# Date: 09/27/2019                                         #
+# MIT Licence                                              #
+# ##########################################################
+
 from FlatCAMTool import FlatCAMTool
 from FlatCAMObj import *
 from shapely.geometry import Point