QtGraphs module starts be quite massive. Therefore, we think it would benefit from categorized logging.

Categories (separate for 2D and 3D, some valid only for either one):

• general
  • renderer creation
  • sync start / end 
  • how many times we sync stuff before rendering, if that can be detected
  • data handling (consider moving to its own category)
    • for verifying the data we got is valid
• series (perhaps add later one for each series type)
  • addition
  • removal
• events
  • only the ones we handle
  • slice view enter / exit
  • zoom / rotate
• property changes
  • if setting a property fails
• animation states
• input handling
  • pick result
  • selection query
• performance
  • timing (add later when doing performance improvement task)
• critical (use qCCritical)
• warning (use qCWarning)