[PLAT-5368] Fix for incorrect build-up of subscription state for subscriptions which a MarketDataManager did not initiate
PLAT-5369 - Fix of Discrete Dividend correction in Slide View
PLAT-5370 - PNL was removed from InterestRateFutureOptionBlackDefaults in 2.1 to 2.2 merge
[PLAT-5028] Correct fixed leg zero coupon lookup to payment frequency not calc frequency
[PLAT-5350] Adding an abstract base class for curve specifications
[PLAT-5351] Adding a constant curve specification
[PLAT-5349] Adding a spread curve specification
[PLAT-5350] CurveSpecification now extend AbstractCurveSpecification
[PLAT-5351], [PLAT-5349] Adding and testing fudge builders for constant and spread curve specifications
[PLAT-5351] Constant curves can now be created and used for bond analytics
[PLAT-5366] Adding support for spread curves