From 5808cbfa7f51f9e21c9194c3bc1a1d581ec90725 Mon Sep 17 00:00:00 2001
From: Kenneth Reitz <me@kennethreitz.org>
Date: Thu, 15 Mar 2018 11:20:47 -0400
Subject: [PATCH] slots

Signed-off-by: Kenneth Reitz <me@kennethreitz.org>
---
 HISTORY.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/HISTORY.rst b/HISTORY.rst
index 80e9e292..36ebe1c6 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -10,6 +10,7 @@ dev
 
 - Warn user about possible slowdown when using cryptography version < 1.3.4
 - Use rfc3986 for URL parsing.
+- Use __slots__ for often–called classes.
 
 **Bugfixes**