Cannot check == between Period and timedelta

[shabbyrobe]

Hello, I'm having trouble comparing the result of subtracting two DateTimes with a timedelta. If I run the following snippet:

import pendulum
from pendulum.period import Period
from datetime import timedelta
d1 = pendulum.datetime(2019, 1, 2, tz='UTC')
d2 = pendulum.datetime(2019, 1, 1, tz='UTC')
period = d1 - d2
print(period == timedelta(days=1))

I get the following error, instead of the True I was expecting:

AttributeError: 'datetime.timedelta' object has no attribute 'start'

[wakemaster39]

Comparison against anything that was not a Period was broken, opened a PR to fail over to Duration if other is not a Period.