message: Update CHANGELOG with loadout optimizer changes
  I forgot to update the changelog for the change to select the correct
  character in the loadout optimizer when opening a loadout from the
  inventory page.
diff: ## Next
  +* When opening a loadout in the loadout optimizer from the inventory page, the correct character is now selected rather than the last played character.
  +
  ## 6.19.0 <span className="changelog-date">(2020-07-05)</span>
  * Loadout Optimizer has been... optimized. It now calculates sets in the background, so you can still interact with it while it works.
  