Merge pull request dabeaz-course#87 from bid0uille/patch_3.4

fix sample output in 03/04 exercise 3.12

Author: dabeaz

Notes/03_Program_organization/04_Modules.md

@@ -299,13 +299,13 @@ In section 2, you wrote a program `report.py` that produced a stock report like
 ```
       Name     Shares      Price     Change
 ---------- ---------- ---------- ----------
-        AA        100      39.91       7.71
-       IBM         50     106.11      15.01
-       CAT        150      78.58      -4.86
-      MSFT        200      30.47     -20.76
-        GE         95      37.38      -2.99
-      MSFT         50      30.47     -34.63
-       IBM        100     106.11      35.67
+        AA        100       9.22     -22.98
+       IBM         50     106.28      15.18
+       CAT        150      35.46     -47.98
+      MSFT        200      20.89     -30.34
+        GE         95      13.48     -26.89
+      MSFT         50      20.89     -44.21
+       IBM        100     106.28      35.84
 ```
 
 Take that program and modify it so that all of the input file