Implemented Redis:GetSharesForRounds()
Implemented IPaymentRounds - share & reward calculation for rounds.
Implemented coin precision determination.
Implemented PaymentProcessor:CalculatePayments() and PaymentProcessor:ExecutePayments().
Testing dot.net 4.5
Updated release mode output path.
Merge pull request #223 from raistlinthewiz/develop

more payment processor work & testing .net 4.5 targeting with mono