proofread changelog for 0.9 release (#799)
proofread changelog for 0.9 release (#799)


alekseysidorov/exonum,alekseysidorov/exonum,exonum/exonum,alekseysidorov/exonum,alekseysidorov/exonum,exonum/exonum,exonum/exonum,exonum/exonum