inComm update: version 4

I have updated the code and instructions for inComm in several ways. For starters, I made the code more robust to allow the program to halt gracefully instead of silently generating errors in the background. But more importantly, I increased the number of substitution variables, allowing you to break the time and date into their component pieces and allowing you to number the comments (see Step 8c. in the installation instructions for the new list). If you are currently using inComm with the defaults, I suggest repeating Steps 7, 12, and 17 to obtain the updates. Just delete the old code so that your template looks like it did in Steps 6, 11, and 15, and then repeat 7, 12, and 17.