Updated CHANGELOG.md with [CDEC-658] and [CDEC-659]
Updated CHANGELOG.md with [CDEC-658] and [CDEC-659]

input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype