Version 0.10.196

+ Terminals widget got interface update:
  it now features information about current session cashier and new free places display.
+ login/logoff dialogs got new "Print" that will be used during check printing.
+ payments, gui and terminals modules are now able to handle session information coherently.
+ payments.Reader now implements auto-login into previously abandoned session
  at the program startup by checking state of last local session. If this session
  doesn't have information about session end, session_begin signal will be emitted to
  initiate session login procedure in connected components.