Update Mozilla Public Suffix List

Use the whole file, add a script to update it.

tools/generate_second_level_tlds.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import requests
+import json
+
+def get_mozilla_list():
+    return requests.get("https://publicsuffix.org/list/public_suffix_list.dat", stream=True)
+
+def load_existing_list():
+    with open('../lists/second-level-tlds/list.json', 'r') as f:
+        return json.load(f)
+
+def dump_to_list(content):
+    with open('../lists/second-level-tlds/list.json', 'w') as f:
+        return json.dump(content, f)
+
+
+if __name__ == '__main__':
+    current_file = load_existing_list()
+    current_file.pop('list')
+    current_file['version'] += 1
+    tlds_list = []
+    for l in get_mozilla_list().iter_lines():
+        l = l.decode().strip()
+        if not l or l.startswith('//'):
+            continue
+        tlds_list.append(l)
+    current_file['list'] = tlds_list
+    dump_to_list(current_file)