Update gin, codec, package summary

go.mod

@@ -5,25 +5,18 @@ go 1.12
 require (
 	github.com/BurntSushi/toml v0.3.1 // indirect
 	github.com/coreos/go-systemd v0.0.0-20181031085051-9002847aa142
-	github.com/gin-contrib/sse v0.0.0-20170109093832-22d885f9ecc7 // indirect
-	github.com/gin-gonic/gin v0.0.0-20180417025440-6ad7b9c9d382
+	github.com/gin-gonic/gin v1.4.0
 	github.com/godbus/dbus v0.0.0-20181101234600-2ff6f7ffd60f // indirect
-	github.com/golang/protobuf v0.0.0-20180328163153-e09c5db29600 // indirect
 	github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
-	github.com/json-iterator/go v0.0.0-20180125064802-358cfc39298c // indirect
-	github.com/mattn/go-isatty v0.0.4 // indirect
 	github.com/monome/maiden/pkg/catalog v0.0.0-00010101000000-000000000000
 	github.com/monome/maiden/pkg/dust v0.0.0-00010101000000-000000000000
 	github.com/monome/maiden/pkg/lines v0.0.0-00010101000000-000000000000
 	github.com/sirupsen/logrus v1.4.1
 	github.com/spf13/cobra v0.0.3
 	github.com/spf13/viper v1.3.2
-	github.com/ugorji/go/codec v0.0.0-20190204201341-e444a5086c43 // indirect
-	golang.org/x/net v0.0.0-20190301231341-16b79f2e4e95 // indirect
+	github.com/ugorji/go v1.1.7 // indirect
 	golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6 // indirect
-	gopkg.in/go-playground/assert.v1 v1.2.1 // indirect
-	gopkg.in/go-playground/validator.v8 v8.18.2 // indirect
 )
 
 replace github.com/monome/maiden/pkg/lines => ./pkg/lines