Need an option to always delete stash after applying

[Joe Vance]

Reading through issues and blog posts, it seems this was the default behavior previously.  It would be helpful if this were configurable, similar to being able to Rebase by default.  I understand that it's a destructive operation and it's best that it default to not delete the stash after applying, but having the option to set this behavior would make my day-to-day a lot more efficient since I rarely stash something longer than it takes to pull changes and then reapply.