Release - v2.3.0

Release Notes

I added a highlight to show today in the calendar. This colorization respects the -z switch and will not show up if it's used. If folks are interested, I could have this turned on or off via a command line switch - let me know if this is of interest. I like it as it helps to draw the eye to the current day.

I have also started to include checksum files for verification if desired.