Tidy up dependencies

go.mod

@@ -4,6 +4,7 @@ go 1.17
 
 require (
 	github.com/ThalesIgnite/crypto11 v1.2.5
+	github.com/balacode/go-delta v0.1.0
 	github.com/dave/jennifer v1.4.1
 	github.com/google/uuid v1.3.0
 	github.com/justincpresley/go-cobs v1.2.0
@@ -16,7 +17,6 @@ require (
 )
 
 require (
-	github.com/balacode/go-delta v0.1.0 // indirect
 	github.com/balacode/zr v1.0.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/miekg/pkcs11 v1.1.1 // indirect