Prepare for 0.17.7
Release History
===============
+
+0.17.7
+======
+* Fix: Restore-to-Clipboard with data from differently configured instances of Cascade
+ may cause an Internal Server Error. Now such an import shows an error message importing
+ whatever is parsable.
+* Add ``role="button"`` to the **ButtonPlugin**.
+* Optionally add CSS class ``stretched-link`` introduced in Bootstrap-4.3 to ``<a href="...">``.
+* Fix: We can't see the SVG, if image file has not been found.
+* Fix: If jsonfield is serialized as string, convert and reload as JSON.
+* Fix: **ImagePlugin** / **PicturePlugin** can't be copied by clipboard CMS.
+* Fix: Strides Plugin Element object has no attribute ``placeholder``.
+
+
0.17.6
======
* Fix: Tabset support for Bootstrap-4 using jQuery.
