Index repo_history by URL

ganarchy.py

@@ -87,6 +87,7 @@ def initdb():
     c.execute('''CREATE TABLE repos (url TEXT PRIMARY KEY, active INT)''')
     c.execute('''CREATE INDEX active_key ON repos (active)''')
     c.execute('''CREATE TABLE repo_history (entry INTEGER PRIMARY KEY ASC AUTOINCREMENT, url TEXT, count INTEGER, head_commit TEXT)''')
+    c.execute('''CREATE INDEX url_key ON repo_history (url)''')
     c.execute('''CREATE TABLE config (git_commit TEXT, project_title TEXT)''')
     c.execute('''INSERT INTO config VALUES ('', '')''')
     conn.commit()