schedule.every expects int instead of float

[tthe-the-j]

floats seem to still work so it may just be a type hinting mistake.
def every(interval: int = 1) -> Job
should become
def every(interval: float = 1) -> Job

[SijmenHuizenga]

The interval is passed into datetime.timedelta, and apparently float arguments are supported. So i guess floats should indeed work just fine. However, i would be hesitant to change the typing without also adding some unit to verify it defiantly works and keeps working in the future. I'm happy to review and merge a pr like that.