tickit_new_stdio() creates a new toplevel Tickit instance whose terminal is attached to the standard
input and output streams.
tickit_new_stdtty() creates a new toplevel Tickit instance whose terminal is attached to the first
terminal found among the standard input, output and error streams. This gives better results if the
containing program is likely to be invoked with shell redirection on either input or output (e.g. similar
to less).
The reference count of a newly-constructed toplevel instance will be one. This can be incremented or
decremented using tickit_ref(3) and tickit_unref(3). When its reference count reaches zero it is
destroyed.