• Tested with mkvtoolnix v63.0.0 on Windows and Linux
• Updated Apache Commons IO to v2.11.0
• Updated Launch4j to v3.14
• Set minimum Java version to 9
• On Windows, try to find EXE without registry (wasn't working)
• Update language list to match mkvtoolnix v63.0.0
• Update MIME types to match shared-mime-info v2.1 (also used by mkvtoolnix now)
• Merged 'Include "Enable Track" as an GUI option' from user shipply2u