This reverts commit 90edbfcf5a652b9aa5a1d870979f07b3f07b766e.
../../../../pkg/mod/github.com/golang/dep@v0.5.4/gps/constraint.go:103:21: cannot use sv (type *semver.Version) as type semver.Version in field value
../../../../pkg/mod/github.com/golang/dep@v0.5.4/gps/constraint.go:122:16: invalid type assertion: c.(semver.Version) (non-interface type *semver.Constraints on left)
../../../../pkg/mod/github.com/golang/dep@v0.5.4/gps/constraint.go:149:4: undefined: semver.Constraint
3741bb04a0