Color Error when the inputs are partly int

[ZacZhangzhuo]

Describe the bug
As titled.

To Reproduce

from compas.colors import Color

color = Color(0.0,0.0,0)

print(Color.coerce(color))

 File "\compas\src\compas\colors\color.py", line 585, in coerce
    raise ColorError
 compas.colors.color.ColorError

[jf---]

@tomvanmele the current implementation coerces str int and float as an argument.
this screams for a refactor with typing.overload which was introduced in py 3.5.

implementing type specific versions of the function is much cleaner IMO.
this could be a nice segue to introduce overload

[tomvanmele]

that would indeed be very nice, but unfortunately, COMPAS 2.x still has to maintain compatibility with IronPython. once we start COMPAS 3 (which will be soon), we can start using this kind of mechanism...

[jf---]

Terrific, could you pls label it as compas_3 as a reminder to self?

[tomvanmele]

sure done