Options package release

NEW RELEASE Options package.

NEW SF_OPTIONS_PRO() function for professional options analytics.

Full OPRA chains with greeks, bid/ask, volume, open interest, and direct contract lookups.

20+ years of historical options data including historical chains and contract/strike time-series.

New implied volatility analytics including IV periods, IV Rank, IV Rank batch, and historical time-series workflows.

New full volatility surface and surface forecast datasets.

New options-derived earnings analytics including implied move, straddle %, and earnings effect.

SF_BROKERAGE() added to Function Generator.

SF_OPTIONS_PRO() added to Function Generator.