AUI-1481 aui-event HISTORY.md

Subtask of AUI-1458: Update HISTORY.md to reflect source code changes.
Titles for each entry are from the corresponding jira ticket.
AUI-1481 aui-event HISTORY.md

Added the aui version number for the entries in the HISTORY.md file
AUI-1481 aui-event HISTORY.md

Sorted items in descending order
AUI-1481 - Source formatting