updated changelog

CHANGELOG.txt

+WCM Base 7.x-1.x, 2017-03-22
+----------------------------
+- WCM Base:
+  - Improved development and deployment documentation in README.md.
+  - Updated contrib modules media, views_bulk_operations, views.
+  - Updated Panopoly to 1.43.
+- WCM Workbench Settings:
+  - Fixed access to content comparison messages.
+  - Replaced overridden Needs Review and Drafts views with custom view.
+  - Updated Needs Review view to link to draft instead of published revision.
+- WCM Permissions: Added permissions for Featured Slideshow taxonomy.
+- OCIO Landing Page: Removed new panels IPE CSS button from non-admins.
+
 WCM Base 7.x-1.x, 2017-02-17
 ----------------------------
 - WCM Base: Updated contrib modules media, redis, smtp, token.