v0.2.4

• Updated to the latest master from upstream.
  • libp2p#57
• Updated all dependencies.
  github.com/davecgh/go-spew v1.1.1 // indirect
  github.com/ipfs/go-cid v0.0.6 // indirect
  github.com/kr/pretty v0.1.0 // indirect
  github.com/libp2p/go-libp2p-core v0.5.0 v0.6.0
  github.com/libp2p/go-openssl v0.0.6 // indirect
  github.com/mr-tron/base58 v1.2.0 // indirect
  golang.org/x/crypto v0.0.0-20200311171314-f7b00557c8c4 v0.0.0-20200604202706-70a84ac30bf9 // indirect
  golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527 v0.0.0-20200615200032-f1bc736245b1
  gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect