Update planning_5.0.md

Author: mportuga

planning_5.0.md

@@ -17,8 +17,9 @@ Not all of the tasks here are absolutely necessary for the update, but they shou
 - [ ] Update dev dependencies to the latest versions (MUST)
 - [x] Merge/decline all outstanding Pull Requests (MUST)
 - [ ] Clean up issues board of all non-issues, i.e. questions or issues for older versions that are no longer reproducible
-- [ ] Update UI-Grid build system to publish multiple files separated by features, i.e. issue #5802 (MUST)
+- [x] Update UI-Grid build system to publish multiple files separated by features, i.e. issue #5802 (MUST)
 - [ ] Update UI-Grid styles to modernize it a bit, i.e. issue #3210
+- [ ] Add typescript support to the build
 
 ## Phase 3 - Angular Upgrade
 Note: For this, we will do our best to follow the instructions laid out by the angular team in the following document: https://angular.io/guide/upgrade