Two-faced ("Kandinsky") Wise Clock

I managed to get the "Kandinsky" two-faced Wise Clock working with most of the relevant apps. The physical build looks and feels solid.

The software changes cover both single Kandinsky (2 opposite displays) and the double Kandinsky (4 displays, 2 on each side).

This new feature helped with eliminating a few bugs related to X_MAX (mostly wrong or hard-coded values). There are still a few remaining, but they only come to light on 4-display Wise Clocks (list from Nick):

'BIG' - only displays on the left two displays;

'TIX' - only displays on the left two displays;

'Words' - looks odd;

'Stopw' - only displays on the left two displays but time is centered;

'Score' - again, not centered; plus the button functions are swapped;

'Pacmn' - doesn't work at all;

'Lived' - again, not centered;

'Anim' - again, not centered;

'UTC' - again, not centered;

'Life' - fails totally, appears to revert to previous APP.

So, lots of work still....

I also resurrected the Wise Clock chronometer for a customer. The updated software will feature new fonts (one shown in the photo below), countdown timer, two-face (of course :), setting the time from buttons etc. Note that this code is on a different trunk than the Wise Clock code. It uses the 1Hz SQW interrupt from DS3231 to update the time on the screen.