Commit 5e7de218 authored by Umang Jain's avatar Umang Jain Committed by Debarshi Ray

appdata: Add release notes for Flathub

See:
https://blogs.gnome.org/hughsie/2019/03/28/new-appstream-validation-requirements/

Some changes by Debarshi Ray.

!101
parent 70bc4806
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