Add a script to generate release log

Author: 1st1

.github/release_log.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python3
+
+
+import argparse
+import json
+import requests
+import re
+
+
+BASE_URL = 'https://api.github.com/repos/magicstack/uvloop/compare'
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description='Generate release log.')
+    parser.add_argument('--to', dest='to_hash', default='master', type=str)
+    parser.add_argument('--from', dest='from_hash', type=str)
+    args = parser.parse_args()
+
+    r = requests.get(f'{BASE_URL}/{args.from_hash}...{args.to_hash}')
+    data = json.loads(r.text)
+
+    for commit in data['commits']:
+        message = commit['commit']['message']
+        first_line = message.partition('\n\n')[0]
+        if commit.get('author'):
+            username = '@{}'.format(commit['author']['login'])
+        else:
+            username = commit['commit']['author']['name']
+        sha = commit["sha"][:8]
+
+        m = re.search(r'\#(?P<num>\d+)\b', message)
+        if m:
+            issue_num = m.group('num')
+        else:
+            issue_num = None
+
+        print(f'* {first_line}')
+        print(f'  (by {username} in {sha}', end='')
+        if issue_num:
+            print(f' for #{issue_num})')
+        else:
+            print(')')
+        print()
+
+
+if __name__ == '__main__':
+    main()