Hints for drawing in main

Hints

• asv-nonstandard-gnome-extension
  com.github.maoschanz.drawing.appdata.xml:7 - kudos
  This tag is a GNOME-specific extension to AppStream and not part of the official specification. Do not expect it to work in all implementations and in all software centers.
• asv-description-first-para-too-short
  com.github.maoschanz.drawing.appdata.xml:58 - "Drawing" is a basic image editor, supporting PNG, JPEG and BMP file types.
  The first `description/p` paragraph of this component might be too short (< 80 characters). Please consider starting with a longer paragraph to improve how the description looks like in software centers and to provide more detailed information on this component immediately in the first paragraph.
• asv-summary-has-dot-suffix
  com.github.maoschanz.drawing.appdata.xml:46 - Un'applicazione per il disegno per l'interfaccia GNOME.
  The component summary should not end with a dot (`.`).