feat: implement (optional) semver parsing of version (#213)

src/test_setup.ts

@@ -0,0 +1,9 @@
+import tmp = require('tmp');
+
+tmp.setGracefulCleanup();
+const tmpdir = tmp.dirSync({template: 'goreleaser-XXXXXX'});
+process.env = Object.assign(process.env, {
+  RUNNER_TEMP: tmpdir.name,
+  RUNNER_TOOL_CACHE: tmpdir.name,
+  GITHUB_ACTION: '1'
+});