Change the key from a query paramter to a HEADER (#328)

Author: misilot

redminelib/engines/base.py

@@ -35,7 +35,7 @@ def __init__(self, **options):
 
         # We would like to be authenticated by API key by default
         if options.get('key') is not None:
-            self.requests['params']['key'] = options['key']
+            self.requests['headers']['X-Redmine-API-Key'] = options['key']
         elif options.get('username') is not None and options.get('password') is not None:
             self.requests['auth'] = (options['username'], options['password'])