2.1.1

Fixed

• Various code smells and technical dept.

Changed

• GUI mode requires documentation to be built

Added

• Taskbar / Titlebar icon.
• Supports opening documentation from GUI.
• Supports substrate in preview.
• Supports transparency in preview.
• Preview awareness of 2D / 3D output format.
• Supports preview themes :
  • Flashy
  • HighContrast
  • HighContrast2
  • QucsGUI
  • QucsIcon
  • Solvespace
  • Transcalc