ValueError: invalid literal for int() with base 10 (backend/alpaca.py: int(pos.qty) should be float ?)

[WillForan]

using context.portfolio.positions gives

ValueError: invalid literal for int() with base 10: '418.8667'

from https://github.com/alpacahq/pylivetrader/blob/master/pylivetrader/backend/alpaca.py#L244

  File "alpaca_short_bsf46.py", line 145, in close_previous_day
    for sec in context.portfolio.positions:
  File "/usr/local/lib/python3.6/site-packages/pylivetrader/algorithm.py", line 512, in portfolio
    self._portfolio = self._backend.portfolio
  File "/usr/local/lib/python3.6/site-packages/pylivetrader/backend/alpaca.py", line 268, in portfolio
    z_portfolio.positions = self.positions
  File "/usr/local/lib/python3.6/site-packages/pylivetrader/backend/alpaca.py", line 244, in positions
    z_position.amount = int(pos.qty)
ValueError: invalid literal for int() with base 10: '418.8667'

changing int(pos.qty) to float in backend/alpaca.py gets past this error

pip show pylivetrader
Name: pylivetrader
Version: 0.7.1
Summary: simple live trading framework
Home-page: https://github.com/alpacahq/pylivetrader.git