Update change log for release/20.1.0

Author: cslzchen

CHANGELOG.md

@@ -2,6 +2,32 @@
 
 We follow the CalVer (https://calver.org/) versioning scheme: YY.MINOR.MICRO.
 
+20.1.0 (11-05-2020)
+===================
+
+OSF CAS second release with FE re-design, BE improvements and DevOps updates
+
+* FE
+  * Refactored styles to be consistent with both OSF and oldCAS
+  * Rewrote how authentication delegation info is retrieved and used
+  * Improved the behavior of inline error messages in login forms
+  * Added new / Rewrote existing authentication exception pages
+  * Improved UI / UX in responsive mode and on various screen dimensions
+
+* BE
+  * Implemented a dedicated OSF CAS login context and a couple of pre-login
+    check actions to support ORCiD login and institution SSO
+  * Implemented ORCiD sign-up auto-redirect for OSF
+
+* DevOps
+  * Updated tomcat server to work with its enclosing Shibboleth server
+  * Separated staging / production and local configurations
+  * Rewrote cas.properties into a helm charts template
+  * Improved build / run / reload for local development
+
+* Other
+  * Replaced Apereo branding with COS / OSF in multiple places
+
 20.0.0 (09-02-2020)
 ===================