XB/UCI chronology

[Guenther]

From now on I will try to release updates always exactly in a frequency of 2 weeks.

The current update of today was forced, because my colouring formulas
for new entries/new releases did not work correctly after 2016 was over.
For simplicity in creating working formulas again, I added another column,
which shows the age since the first version was released or detected.
(the column for the age since the last work was done was already there)

Happy new year,
Guenther

http://rwbc-chess.de/chronology.htm