Version 1.6.54

+ u2py.config got new configurable boolean parameter:
  raise_on_io_error with True value by default.
  It can be utilized to suppress raising IOError for applications
  that do not require this functionality.
+ interface_basis.load got new optional callback parameter: check_params.
  It can be utilized to perform user-defined checks before the function call.
  This parameter should accept the list of function arguments and return integer
  if check has not passed and there is no need to call aforementioned function.
  On successful completion of check, None should be returned.