The metainfo file is no longer a valid XML file; the XML declaration
must be the first line in the file. The file can be checked with
appstreamcli validate.
This moves the declaration back to the top of the file.
Signed-off-by: Stephen Kitt <steve@sk2.org>
* Add <releases> tag
* Update summary to match recommended style
https://freedesktop.org/software/appstream/docs/chap-Metadata.html#tag-summary
* Add copyright information
• value-missing : <!-- Copyright [year] [name] --> is not present
* Add update contact
• tag-missing : <update_contact> is not present
* release: Use quotes for filepaths
* release: Mention the need to update appdata file