Updated CHANGELOG.md

Author: abrighton

CHANGELOG.md

@@ -3,13 +3,21 @@
 All notable changes to this project will be documented in this file.
 See also [JsonSchemaChanges.md](JsonSchemaChanges.md) for a list of changes in the JSON Schema for API model files.
 
-## [ICD v3.1.0] - 2024--
+## [ICD v3.1.0] - 2024-07-22
 
 - Updated dependencies, switched from akka to pekko.
 - Replaced dependency on sjsonnet Java lib with a use of "jsonnet" command, which must be installed if the feature is used.
 - UI Changes in icd web app: Moved buttons that depend on the selected subsystems or ICDs to the *Select* tab (Buttons are only enabled when applicable).
-- Added Markdown/Paradox based documentation under ./docs directory. (to replace Docushare PDF version)
-- For ICDs, the summary table now displays the paths/routes that are used for HTTP services
+- Added Markdown/Paradox based documentation under ./docs directory (to replace Docushare PDF version).
+- For ICDs, the summary table now displays the paths/routes that are used for HTTP services.
+- For ICDs between components in the same subsystem, the version of the API is now displayed instead of "unpublished".
+- Fixes for online documentation.
+- Improved readability of service apis in SDB PDFs.
+- Fixes for PDF display of HTML markup in OpenApi based service APIs.
+- Fixed issue when, after renaming a component, the old name still showed up in the generated APIs.
+- In icd web app: Removed display of components in the sidebar that are not in the ICD and added the subsystem names before the components.
+- Changed ICD PDFs to include more client API information, such as a summary of subscribed events or sent commands.
+- See [the JIRA release page](https://tmt-project.atlassian.net/wiki/spaces/ICDDB/pages/2320531457/Release+Notes+-+SE-DEOPS-ICDDB+-+3.1+-+Jul+18+13+37) for details on the changes.
 
 ## [ICD v3.0.0] - 2024-02-04