• Remove 'pretty' option from 'tsconfig.json'.
• Limit access to 'package.json' in source files.
• Use 'getName()' and 'getVersion()' to get 'productName' and 'version'.
• Make 'lang' a type, not interface.
• Object 'packageJson' has now proper types.
• Use new repository name only for update checker feature.
• Update icons.
• Use HTML tags in credits on Linux builds only.
• Switch from deprecated event to newer function.
• Bump Electron version to ^12.0.7.