Stuart Breckenridge 58575331dd
Fixes #2018
This commit adds a new `MarkAsReadAlertControllerSourceType` protocol to which `CGRect`, `UIView`, and `UIBarButtonItem` conform to.

The `MarkAsReadAlertController` now presents an action sheet for mark as read, mark above as read, and mark below as read. The above is used for the `popoverPresentationController`’s `barButtonItem`, `sourceRect`, or `sourceView` as needed.
2020-05-13 12:33:51 +08:00
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2020-05-13 12:33:51 +08:00