Hints for subtitlecomposer in main

Hints

• asv-unknown-tag
  org.kde.subtitlecomposer.appdata.xml:543 - bundle
  Found invalid tag. Non-standard tags should be prefixed with `x-`. AppStream also provides the <custom/> tag to add arbitrary custom data to metainfo files. This tag is read by AppStream libraries and may be useful instead of defining new custom toplevel or `x-`-prefixed tags if you just want to add custom data to a metainfo file.
• asv-unknown-tag
  org.kde.subtitlecomposer.appdata.xml:549 - bundle
  Found invalid tag. Non-standard tags should be prefixed with `x-`. AppStream also provides the <custom/> tag to add arbitrary custom data to metainfo files. This tag is read by AppStream libraries and may be useful instead of defining new custom toplevel or `x-`-prefixed tags if you just want to add custom data to a metainfo file.
• asv-developer-info-missing
  org.kde.subtitlecomposer.appdata.xml -
  This component contains no `developer` element with information about its author.