The most important change is the revert of the [411e095] feature that was introduced in the previous 1.16.2 version. This feature tried to display a helpful error message when one of your entities doesn't define a _toString() method and it should do that (because it's needed in some of the features of this bundle). Sadly we couldn't make it work and we got several issue reports about it.
New features
[28fca82] Display a proper error message when a database item cannot be removed (@javiereguiluz)
[7433f73] Added some missing CSS classes for action links/buttons (@javiereguiluz)
[5adb51b] Updated the list of contributors to this bundle (thank you all!) (@ogizanagi)
Bug fixes
[1f43c96] Improved tests to avoid randomly failed tests on Travis and AppVeyor (@javiereguiluz)
[4b4613e] Fixed PHP-CS-Fixer config for its new version (@ogizanagi)
[d17bb82] Don't show an error when __toString() is missing in entities (@javiereguiluz)