Discount Curve Regression

Implementation of functional regression for the following features of discount curve analytics:
 - Discount curve creation from a composite mix of rates instruments - CDs, Futures, and swaps
 - Discount curve creation from nodes of rates and/or discount factors
 - Parallel shifted, node-shifted, and basis shifted discount curve creation from the base discount curve
 - Scenario tweak adjusted discount curve creation from the base discount curve
 - Spot and Effective implied rates and discount factors (period spanners)
 - Quote retrieval latency