Allow time to be given as float

[alistairking]

Currently the datetime parsing code at

pybgpstream/pybgpstream/pybgpstream.py

Lines 101 to 110 in e837264

	def _datestr_to_epoch(datestr):
	if datestr is None:
	return 0
	if isinstance(datestr, int):
	return datestr
	assert (isinstance(datestr, str))
	if datestr.isdigit():
	return int(datestr)
	dt = dateutil.parser.parse(datestr, ignoretz=True)
	return int((dt - datetime.datetime(1970, 1, 1)).total_seconds())

triggers an assertion if the given time is a float (as is the case when passing time.time()).

[digizeph]

@alistairking I added the support for floating number timestamps in PR #41, could you take a look?

[brendonj]

#41 has been merged.