Add new IB fields and fix types from PR #103

- Change initialInvestment from Decimal to bool across all types
- Add positionActionID to Trade, Lot, SymbolSummary, AssetSummary, Order
- Add many new fields to SymbolSummary
- Add fields to Transfer (figi, settleDate, issuerCountryCode, etc.)
- Add fields to CorporateAction (figi, issuerCountryCode, costBasis)
- Add liteSurchargeAccruals to EquitySummaryByReportDateInBase
- Add otherIncomeMTD/YTD to CashReportCurrency
- Support "Yes"/"No" as boolean values
- Handle "MULTI" in date/datetime fields
- Add "RUS" currency code