update deps, go version, travis

.travis.yml

@@ -4,7 +4,7 @@ os:
 language: go
 
 go:
-  - 1.11.x
+  - 1.13.x
 
 env:
   global:

go.mod

 module github.com/ipfs/interface-go-ipfs-core
 
 require (
-	github.com/ipfs/go-cid v0.0.3
-	github.com/ipfs/go-ipfs-files v0.0.2
-	github.com/ipfs/go-ipld-cbor v0.0.1
-	github.com/ipfs/go-ipld-format v0.0.1
-	github.com/ipfs/go-merkledag v0.0.3
-	github.com/ipfs/go-path v0.0.3
-	github.com/ipfs/go-unixfs v0.0.4
-	github.com/libp2p/go-libp2p-core v0.2.2
-	github.com/multiformats/go-multiaddr v0.0.4
-	github.com/multiformats/go-multihash v0.0.7
+	github.com/ipfs/go-cid v0.0.6
+	github.com/ipfs/go-ipfs-files v0.0.8
+	github.com/ipfs/go-ipld-cbor v0.0.4
+	github.com/ipfs/go-ipld-format v0.2.0
+	github.com/ipfs/go-merkledag v0.3.2
+	github.com/ipfs/go-path v0.0.7
+	github.com/ipfs/go-unixfs v0.2.4
+	github.com/libp2p/go-libp2p-core v0.6.0
+	github.com/multiformats/go-multiaddr v0.2.2
+	github.com/multiformats/go-multihash v0.0.13
 )
 
-go 1.12
+go 1.13