ShaderGlass 0.6 final released

Shader Glass 0.6 released!

• fine-tuning of Parameters for each shader
• ability to export a .png screenshot
• RetroArch shaders repo sync (~100 new shader presets)
• new keyboard shortcuts: Save = Ctrl+Shift+S, Pause/Unpause = Ctrl+Shift+P
• custom Aspect Ratio Correction