Update changelog.

Author: akademy

changelog.md

@@ -4,17 +4,21 @@
 
 ### Added
 - Components added:
-  - Breadcrumbs
-  - Footer
-    - FooterLinks
-  - Navbar
-    - NavbarLinks
-  - ThemeProvider
-  - User
-  - VisitInput
+  - Breadcrumbs - Highlight position of page in hierarchy
+  - ColourSchemeButton - Switch between light and dark schemes.
+  - Footer - A footer, with logo, menu and copyright
+    - FooterLinks - A group of links for Footer
+    - FooterLink - A link for FooterLinks
+  - ImageColorSchemeSwitch - Allow images to be determined by colour scheme
+  - Navbar - A header with a menu, and login
+    - NavbarLinks - a group of menu items for Navbar
+    - NavbarLink - a menuitem
+  - ThemeProvider - A provider of a theme
+  - User - User control, for login, logoff.
+  - VisitInput - A Input for Diamonds visits/sessions
 - Themes added:
   - Diamond
-  - Base
+  - Generic
 
 ### Fixed
 -