2.5.16 released October 4, 1999

- one new eye pattern
- more experimental move generation code
- cleanup of main.h, worm.c, and matchpat.c
- improved diagnostic error messages in moyo.c
- bugfix in moyo.c
- new numbering scheme for eyes.db
- bugfix in small_semeai()
- '*' can now be used as label in autohelper functions
- minor tuning
- Backfill depth increased from 8 to 14.