Updated Changelog (markdown)

Changelog.md

@@ -11,6 +11,18 @@ This change log tracks the releases on our [pilot server](https://recodex.mff.cu
 
 Older versions are at the bottom of this page.
 
+## Being prepared...
+
+* New exercise assignments page (where a list of all assignments of given exercise is presented).
+* Multi-assign form moved to exercise assignments page and merged with assignment edit form.
+* Adding "visible from" option to assignments which can postpone the publication of assignment to students.
+* Adding "show judge logs" option to assignments. If enabled, the students may see judge logs.
+* Adding "debug" flag to (re)submissions, so they can be distinguished in the submission history table.
+* Updating notification email templates and their localizations.
+* New notification created -- students may be notified when the awarded points for their solution is changed.
+* Judge logs are now available also for data-only exercises.
+* Pipeline detail page improved.
+
 ## 2.1.2019
 
 * Shadow assignments finally completed.