Add and configure hreflang. See drupalro#27.

composer.json

@@ -25,6 +25,7 @@
         "drupal/core": "~8.0",
         "drupal/disqus": "^1.0@RC",
         "drupal/google_map_field": "^1.4",
+        "drupal/hreflang": "^1.0",
         "drupal/metatag": "^1.1",
         "drupal/nexus": "1.0.0-beta1",
         "drupal/paragraphs": "^1.1",

config/sync/automated_cron.settings.yml

@@ -1,3 +1,3 @@
-interval: 10800
+interval: 43200
 _core:
   default_config_hash: fUksROt4FfkAU9BV4hV2XvhTBSS2nTNrZS4U7S-tKrs

config/sync/checklistapi.progress.seo_checklist.yml

@@ -1,38 +1,53 @@
 progress:
-  '#changed': 1498570364
+  '#changed': 1498572266
   '#changed_by': '1'
-  '#completed_items': 11
+  '#completed_items': 16
   '#items':
     install_and_enable_seo_checklist_module:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'
     install_and_enable_admin_toolbar_module:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'
     install_composer_command_line_tool:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'
     install_drush_command_line_tool:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'
     enable_clean_urls:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'
     install_and_enable_redirect_module:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'
     configure_the_redirect_module:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'
     install_and_enable_pathauto_module:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'
     configure_pathauto_module:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'
     create_pathauto_patterns:
-      '#completed': 1498570364
+      '#completed': 1498572266
+      '#uid': '1'
+    install_and_enable_metatag_module:
+      '#completed': 1498572266
+      '#uid': '1'
+    install_and_enable_alternate_hreflang_module:
+      '#completed': 1498572266
+      '#uid': '1'
+    install_and_enable_xml_sitemap_module:
+      '#completed': 1498572266
+      '#uid': '1'
+    configure_xml_sitemap_module:
+      '#completed': 1498572266
+      '#uid': '1'
+    set_up_cron:
+      '#completed': 1498572266
       '#uid': '1'
     install_and_enable_share_buttons_by_addtoany:
-      '#completed': 1498570364
+      '#completed': 1498572266
       '#uid': '1'

config/sync/core.extension.yml

@@ -30,6 +30,7 @@ module:
   google_map_field: 0
   help: 0
   history: 0
+  hreflang: 0
   image: 0
   language: 0
   link: 0