'Retrieve the formatted not streamed yet entries of the database
including the headers.
>>> log = Logbook()
>>> log.append({\'gen\' : 0})
>>> print log.stream
gen
0
>>> log.append({\'gen\' : 1})
>>> print log.stream
1'

@property
def stream(self):

    (startindex, self.buffindex) = (self.buffindex, len(self))
    return self.__str__(startindex)
