Add new directions to Makefile

Makefile

@@ -27,3 +27,11 @@ lint:
 cover:
 	go test ./... -coverprofile=coverage.out
 	go tool cover -html=coverage.out
+
+ineffassign:
+	go get -u github.com/gordonklaus/ineffassign/...
+	ineffassign .
+
+ci-lint:
+	golangci-lint run
+

go.mod

@@ -3,6 +3,7 @@ module github.com/otrv4/prekey-server-xmpp
 go 1.13
 
 require (
+	github.com/gordonklaus/ineffassign v0.0.0-20190601041439-ed7b1b5ee0f8 // indirect
 	github.com/pkg/errors v0.8.0 // indirect
 	github.com/sheenobu/go-xco v0.0.0-20170503183122-20e894c4a59f
 	golang.org/x/net v0.0.0-20180712202826-d0887baf81f4 // indirect

go.sum

+github.com/gordonklaus/ineffassign v0.0.0-20190601041439-ed7b1b5ee0f8 h1:ehVe1P3MbhHjeN/Rn66N2fGLrP85XXO1uxpLhv0jtX8=
+github.com/gordonklaus/ineffassign v0.0.0-20190601041439-ed7b1b5ee0f8/go.mod h1:cuNKsD1zp2v6XfE/orVX2QE1LC+i254ceGcVeDT3pTU=
 github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/sheenobu/go-xco v0.0.0-20170503183122-20e894c4a59f h1:/NwSPAEngU1Ol/T0Xh3gSt8uHHxpa02H9BIMq95lBr8=