CONTRIBUTING.md: Prefer nested imports (#794)
CONTRIBUTING.md: Prefer nested imports (#794)


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