Syncs this standalone PyPI mirror with the canonical monorepo source.
Last mirror update was Apr 5; v1.8.0 is now live on PyPI as madeonsol-x402.

v1.8.0 changes:
- MadeOnSolClient gains wallet_stats / wallet_pnl / wallet_positions / wallet_trades methods (x402-paid)
- MadeOnSolREST gains the same set against /api/v1 with Bearer auth
- __version__ bumped to 1.8.0
- Universal Wallet section + endpoint table in README

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>