Use goreleaser to build and release (#244)

Instead of using gox on one side and an action to release, we can merge
them together with goreleaser which will build for extra targets (arm,
mips if needed in the future) and it also takes care of creating
checksums, a source archive, and a changelog and creating a release with
all the artifacts.

All binaries should respect the old naming convention, so any scripts
out there should still work.

Signed-off-by: Itxaka <igarcia@suse.com>

vendor/github.com/hashicorp/go-version/CHANGELOG.md

@@ -0,0 +1,25 @@
+# 1.3.0 (March 31, 2021)
+
+Please note that CHANGELOG.md does not exist in the source code prior to this release.
+
+FEATURES:
+ - Add `Core` function to return a version without prerelease or metadata ([#85](https://github.com/hashicorp/go-version/pull/85))
+
+# 1.2.1 (June 17, 2020)
+
+BUG FIXES:
+ - Prevent `Version.Equal` method from panicking on `nil` encounter ([#73](https://github.com/hashicorp/go-version/pull/73))
+
+# 1.2.0 (April 23, 2019)
+
+FEATURES:
+ - Add `GreaterThanOrEqual` and `LessThanOrEqual` helper methods ([#53](https://github.com/hashicorp/go-version/pull/53))
+
+# 1.1.0 (Jan 07, 2019)
+
+FEATURES:
+ - Add `NewSemver` constructor ([#45](https://github.com/hashicorp/go-version/pull/45))
+
+# 1.0.0 (August 24, 2018)
+
+Initial release.

vendor/github.com/hashicorp/go-version/version.go

@@ -278,6 +278,14 @@ func comparePrereleases(v string, other string) int {
 	return 0
 }
 
+// Core returns a new version constructed from only the MAJOR.MINOR.PATCH
+// segments of the version, without prerelease or metadata.
+func (v *Version) Core() *Version {
+	segments := v.Segments64()
+	segmentsOnly := fmt.Sprintf("%d.%d.%d", segments[0], segments[1], segments[2])
+	return Must(NewVersion(segmentsOnly))
+}
+
 // Equal tests if two versions are equal.
 func (v *Version) Equal(o *Version) bool {
 	if v == nil || o == nil {