autogen(docs): regenerate and update changelog

CHANGELOG.md

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 **Table of Contents**
 
-- [Unreleased (2021-07-30)](#unreleased-2021-07-30)
+- [Unreleased (2021-08-01)](#unreleased-2021-08-01)
     - [Bug Fixes](#bug-fixes)
     - [Features](#features)
 - [0.7.1-alpha.1 (2021-07-22)](#071-alpha1-2021-07-22)
@@ -190,17 +190,32 @@
 
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-# [Unreleased](https://github.com/ory/kratos/compare/v0.7.1-alpha.1...05256232bf85d68e068eece6c883f46a447ba5bd) (2021-07-30)
+# [Unreleased](https://github.com/ory/kratos/compare/v0.7.1-alpha.1...f6b3aa45b1f39ca5e9ee7ef4cd96de1970b2ed71) (2021-08-01)
 
 
 ### Bug Fixes
 
 * Add new message when refresh parameter is true ([#1560](https://github.com/ory/kratos/issues/1560)) ([0525623](https://github.com/ory/kratos/commit/05256232bf85d68e068eece6c883f46a447ba5bd)), closes [#1117](https://github.com/ory/kratos/issues/1117)
+* **docs:** Ensure config reference is updated ([f6b3aa4](https://github.com/ory/kratos/commit/f6b3aa45b1f39ca5e9ee7ef4cd96de1970b2ed71)), closes [#1597](https://github.com/ory/kratos/issues/1597)
+* Http context memory leak ([b21bd22](https://github.com/ory/kratos/commit/b21bd224059e8a42da9814237572a118297c5210)):
+
+    Ory Kratos was using `gorilla/sessions` prior to version v1.2 which had a dependency on `gorilla/context`, a deprecated library with known memory management issues. Even though we used `gorilla/context`'s clean up middleware, it appears that `r.Context()` was not properly cleaned up, causing memory leaks.
+
+    On average, the memory leak is pretty small, but depending on what gets added to `r.Context()` it could significantly increase the memory leak.
+
+    By replacing `gorilla/sessions` with v1.2.1 we:
+
+    1. Increased the HTTP API throughput by an estimate of 4 times;
+    2. Brought average memory use back down to about 12MB;
+
+    Closes https://github.com/ory-corp/cloud/issues/1292
+
 * Register argon2 CLI commands properly ([#1592](https://github.com/ory/kratos/issues/1592)) ([45c28d9](https://github.com/ory/kratos/commit/45c28d99064baf8051521a1078ac2b59bb3206ec))
 * Remove session cookie on logout ([#1587](https://github.com/ory/kratos/issues/1587)) ([cdb30bb](https://github.com/ory/kratos/commit/cdb30bb65ac932a17e4924b4efc8952113452513)), closes [#1584](https://github.com/ory/kratos/issues/1584):
 
     Before, the logout endpoint would invalidate the session cookie, but not remove it. This was a regression introduced in 0.7.0. This patch resolves that issue.
 
+* **sdk:** Use proper annotation for genericError ([#1611](https://github.com/ory/kratos/issues/1611)) ([da214b2](https://github.com/ory/kratos/commit/da214b2933ae2a91d8c5bf6aa8eea613a2078b9d)), closes [#1609](https://github.com/ory/kratos/issues/1609)
 * Update csrf token cookie name ([#1601](https://github.com/ory/kratos/issues/1601)) ([64c90bf](https://github.com/ory/kratos/commit/64c90bf5e5cec6545a81f88ad5fabb29e9e80850)):
 
     See https://github.com/ory-corp/cloud/issues/1252