v1.1.2

• Align REST parameters and payloads with openapi.json across RFQ, Strategy, Order, History, Capital, Market, and Position endpoints.\n- Fix K-line timestamps to use seconds (per OpenAPI) and update documentation accordingly.\n- Add optional broker header support (X-Broker-Id) for single and batch order submission.\n- Expand optional filters/fields (e.g., history sortDirection, RFQ/strategy extra fields, withdrawal recipientInformation, etc.).