equity prices

[worktrial1]

• Updated examples
• Version bump

---

Note

Document equity_prices stream with schema/filters, add example subscription, expand crypto filter examples, and bump version to 1.4.2.

• Docs (README.md):
  • Add equity_prices topic with EquityPrice schema and filter examples; note historical data dump applies to both CryptoPrice and EquityPrice.
  • Add additional crypto_prices filter examples with uppercase symbols.
• Examples:
  • Update examples/quick-connection.ts to include an equity_prices subscription example.
• Release:
  • Bump package version to 1.4.2.

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