Support google style guide

[peteboothroyd]

The google python style guide suggests enforcing one import per line which can be achieved with the force_single_line option. However they also suggest an exception for the typing module. I can't find any way of specifying this to isort, does it exist? If not would it be much effort to implement? I imagine that a nice way of doing this would be to allow specifying certain packages as overrides for the force_single_line rule.

[BryceCicada]

The closest I've found is to use isort:skip like:

from typing import Any # isort:skip

However, isort puts these after other imports, which may not be what you need. See #843. Related #295.

[timothycrosley]

This is now supported in develop and will make it's way into the 5.0.0 release:

https://github.com/timothycrosley/isort/blob/develop/isort/profiles.py#L22

Thanks!

~Timothy

[peteboothroyd]

awesome, thank you very much!