AppcastItem

Download details for the appcast

Record Field	Description
`dsaSignature` Signature: string option	Optional DSA signature for the archive. It is recommended to use this if the app itself is not signed
`length` Signature: int64	Length of the file in bytes
`mimetype` Signature: MimeType	Mime type of the update file, usualy octetstream
`minimumSystemVersion` Signature: string option	Optional miminal system version for the update
`pubdate` Signature: DateTime	Date when update is published
`shortVersion` Signature: string option	Optional human readable version number. This will be shown to the user if present otherwise the technical version number will be used
`title` Signature: string	The name of the update
`url` Signature: Uri	URI where the update files are found
`version` Signature: string	Machine readable version number used to determine if an update is available by the client (should follow semver)