Greaseweazle Tools 1.12

Release Notes:

• New disk formats:
  • Commodore 1541 (C64) GCR: commodore.1541
  • IBM: ibm.320
  • Dragon32, Dragon64: dragon...
  • Tandy CoCo: coco...
• New image format: D64 (C64 CBMDOS GCR disks)
• ibm: Improve layout of very full tracks
• ibm: Warn on oversize tracks (data too large to fit)
• ibm: Allow gapbyte value to be specified in diskdef
• d88: Remove duplicate sectors from oversize tracks