Update changelog for 0.9.1 (#264)

Author: jsha

CHANGELOG.md

@@ -1,5 +1,18 @@
 # Changelog
 
+## 0.9.1 (2022-06-10)
+
+### Fixed
+
+ - rustls_server_config_builder_set_client_verifier and
+   rustls_server_config_builder_set_client_verifier_optional: fix a double
+   free (#263)
+ - rustls_server_connection_get_sni_hostname: actually set \*out_n when SNI
+   unavailable (#262).
+ - rustls_client_cert_verifier_new and rustls_client_cert_verifier_optional_new:
+   change to const and fix some lifecycle comments (#260).
+ - Fixed documentation for rustls_certified_key_build (#257)
+
 ## 0.9.0 (2022-05-12)
 
 ### Added

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rustls-ffi"
-version = "0.9.0"
+version = "0.9.1"
 authors = ["Jacob Hoffman-Andrews <[email protected]>"]
 license = "Apache-2.0/ISC/MIT"
 readme = "README-crates.io.md"