3.4.2 - Linux & Windows - 1st Separate Release

• A build of Quark Player 3.4.2 with Electron 22 instead of 28, to continue supporting Windows 7/8/8.1 and Ubuntu 18.04/Debian 9
• Secondary windows (like the about window, shortcuts window, etc.), now appear centered on the screen with the main window (if you have multiple monitors).
• Added "Open config.json" item to the Developer menu
• Added "Report an Issue" item to the About menu
• Updated electron-store and electron-log
• Corrected typo on the Help window (Shorcuts > Shortcuts)