NormalPainter 1.6.1 : Increased convenience

Hello again

NormalPainter 1.6.1 has been released. Changes:

• Added ability to drag camera with middle click for those familiar with Blender
• Replaced the old file menu with a more convenient one on the top of the screen and put some actions like normalization and blurring in the menu
• Replaced the FileChooser with a more convenient one that allows Quick Access on Windows