Release 0.5.0 (#86)

* Release 0.5.0

* Bump release date

Author: GrahamCampbell

CHANGELOG.md

@@ -1,11 +1,17 @@
 # CHANGELOG
 
+## 0.5.0 - 2021-02-17
+
+* Add oauth_body_hash parameter to authorization header
+* Do not require token_secret for 2-legged authentication
+* Added HMAC-SHA256 support
+* Added ext-openssl suggest
+* Added PHP 8 Support
+
 ## 0.4.0 - 2020-06-30
 
-### Changed
-- Allow guzzle v7
+* Allow guzzle 7
 
 ## 0.3.0 - 2015-08-15
 
-* Updated to work with Guzzle 6 as a middleware.
-
+* Updated to work with Guzzle 6 as a middleware