4.2.0

• Improved behavior of Auto save when window was closed
  • It divided into window closed and browser exited
  • Fixed problem that only one window could be restored with option of "restore previous session at startup"
• Added option to use "discarded" property for lazy loading (only Firefox 63 or later)
  • Improve performance when opening tabs
• Fixed problem that increased memory usage when restoring session or closing a large number of tabs
• Fixed problem that tabs are opened in reverse order