add changelog

content/releases/_index.md

+---
+title: Release History
+---
+
+## V0.2.0 2425 Cycle
+
+* Database is now academic year aware - can plan across multiple academic years
+* Different departments can be supported at the same time
+* Academic years are referenced by ID rather than date field
+* Added duplication to iterations and activities
+
+| Operating System | Link |
+| ---------------- | ---- |
+| Windows 10       | TODO |
+| Linux            | TODO |
+| Mac              | TODO |
+
+## V0.1.0 2324 Cycle
+
+* Initial (limited) release