Add method to get latest release of a repository (#609)

github/tests/GitRelease.py

@@ -86,6 +86,11 @@ class Release(Framework.TestCase):
         self.assertEqual(self.release.author._rawData['login'], "edhollandAL")
         self.assertEqual(self.release.html_url, "https://github.com/edhollandAL/PyGithub/releases/tag/v3.0.0")
 
+    def testGetLatestRelease(self):
+        self.repo = self.g.get_user().get_repo('PyGithub')
+        latest_release = self.repo.get_latest_release()
+        self.assertEqual(latest_release.tag_name, "v1.25.2")
+
     def testGetAsset(self):
         """
         Test retrieving a release asset directly by its ID.