Euchre, Pitch, Briscola, and Spite & Malice
Five new files, each reusing or extending an existing engine.
* cg-match.el: Go Fish and Old Maid, matching games on a shared
helper set (completes the original wishlist).
* cg-cribbage.el: two-handed Cribbage to 121 -- the crib, the cut,
pegging, and a full show scorer (fifteens, pairs, runs, flush, nobs).
* cg-scopa.el: a capture-by-sum engine driving Scopa (40-card, sette
bello, primiera, scopas) and Casino (pairs and sums, big/little
casino, aces, sweeps). Casino omits builds.
* cg-trick-ext.el: Euchre (24-card with both bowers), Auction Pitch
(bid, pitch sets trump, High/Low/Jack/Game), and Briscola (fixed
trump, no follow), as subclasses of the cg-trick engine.
* cg-spite.el: Spite & Malice, a competitive patience to empty the
goal pile onto shared Ace-to-Queen centre piles; Kings are wild.
Wire all nine commands into the card-game chooser, extend the Makefile
EL list, and add README sections. Add ten ERT tests covering each
game's engine and a full AI-driven game; the suite is now 107/107 and
every file byte-compiles cleanly.
New files at Version 1.0.60 to match the tree; post-1.0.60 work
toward 1.0.90.