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# 4.15.0

### January 17, 2017 - 4.15 - Usage Tracking Improvements

* Features:
  * Improvements to bill details page
  * Update to App Results page to show compute charges to two decimal places
  * Improved Launch App dropdown menu response time
  * Warn users if there are operations in progress when they empty the trash
  * Added email notification for apps that aborted due to error
* Bug fixes:
  * Fixed issue that prevented removing of collaborators from the Share dialog
  * Fixed issue within the Developer Portal that truncated the Preview section
  * Fixed issue that limited the number of Workgroups listed within the Workgroup menu
  * Fixed issue that allowed users to move data in a pending transfer state to trash. User now needs to cancel transfer prior to move.