0.8.1-gm8

Changed

• Renamed the old --cursed flag that attempted to make a cursed inscription using OP_66 to --cursed66. The inscriptions it creates are ignored by ord's indexer.

Added

• Add --check-index subcommand to passively check the index file.
• Add --cursed flag to create cursed inscriptions by inscribing in the 2nd reveal input instead of the 1st.

The addition of the --cursed flag was requested and funded by mone (https://x.com/Luckycharm_NFT). He inscribed a cursed inscription and then reinscribed the same sat with a recursive non-cursed inscription. See https://ordinals.com/sat/1931140000000000 for the two inscriptions.