clean up go.mod + v2

go.mod

@@ -1,8 +1,9 @@
-module github.com/markus-wa/quickhull-go
+module github.com/markus-wa/quickhull-go/v2
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/golang/geo v0.0.0-20180826223333-635502111454
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/stretchr/testify v1.4.0
 )
+
+go 1.11

go.sum

@@ -1,16 +1,11 @@
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/gammazero/deque v0.0.0-20180920172122-f6adf94963e4 h1:R+19WKQClnfMXS60cP5BmMe1wjZ4u0evY2p2Ar0ZTXo=
-github.com/gammazero/deque v0.0.0-20180920172122-f6adf94963e4/go.mod h1:GeIq9qoE43YdGnDXURnmKTnGg15pQz4mYkXSTChbneI=
 github.com/golang/geo v0.0.0-20180826223333-635502111454 h1:UiKw4ZsXdOM6qRj2nP54DJY6Mp3Vd+aSu1OhPvPR+94=
 github.com/golang/geo v0.0.0-20180826223333-635502111454/go.mod h1:vgWZ7cu0fq0KY3PpEHsocXOWJpRtkcbKemU4IUw0M60=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=