version 4.2

Change log:

• fix: raise window from hidden state when clicked on notification
• updated new UA
• fix: window geometry persistence behavior
• feat: open download directory straight from the download manager
• fix: consistent window show behavior
• feat: implement IPC
  • lets run only one instance of application
  • lets pass arguments from secondary instances to main
  • restore application with command line argument to secondary instance:
    example: whatsie whatsapp://whatsie
    will restore the primary instance of Whatsie process
• fix: open new chat without reloading page
  • support both command line and dialog based new chat invocation.