1.9.0

Added some math functions, for example Abs, Ceil, Floor and Round.

>>> from piccolo.query.functions import Round
>>> await Ticket.select(Round(Ticket.price, alias="price"))
[{'price': 50.0}]

Added more operators to QueryString (multiply, divide, modulus, power), so we can do things like:

>>> await Ticket.select(Round(Ticket.price) * 2)
[{'price': 100.0}]

Fixed some edge cases around defaults for Array columns.

def get_default():
    # This used to fail:
    return [datetime.time(hour=8, minute=0)]

class MyTable(Table):
    times = Array(Time(), default=get_default)

Fixed some deprecation warnings, and improved CockroachDB array tests.