frigcal 1.6: PNGs sans Pillow, Tk colors, Linux

[Mark Lutz]

There is a new version of frigcal, a Python 3.X/tkinter desktop GUI calendar
program.  This version makes an install of the third-party Pillow (a.k.a. PIL)
library optional for some combinations of image-file type and Python version;
addresses incompatible changes in color names in the Tk 8.6 library underlying
tkinter in Python 3.4 and later; and on Linux improves the behavior of modal 
dialogs and window icons. 

Ubuntu screenshot:
    http://learning-python.com/frigcal/screenshots/New-Version1.6/v1.6-ubuntu-linux.png
Windows screenshot:
    http://learning-python.com/frigcal/screenshots/000-latest-composite.png
Version 1.6 changes:
    http://learning-python.com/frigcal/Readme-frigcal.html#s7
All the docs:
    http://learning-python.com/frigcal/Readme-frigcal.html

--M. Lutz (http://www.rmi.net/~lutz | http://learning-python.com)