More fixes from your feedback — thank you!

• Fixed a rare freeze where playing your final card onto a meld could get
  your turn stuck with nothing to discard.
• Big hands are fully visible now. In later rounds every card fits on screen
  instead of the last few getting cut off.
• Faster discards. The card you just drew is auto-selected, so tossing it
  back is a single tap.
• Smarter opponents. The computer players now finish and lay down their
  hands far more effectively — the higher difficulties are a real challenge.

Have fun, and keep the feedback coming!