Enhance expressiveness of Path

[geovanisouza92]

Hello guys!

Thank you for this useful lib.

Inspired by Python's 3.4 new pathlib, I made this change that allow us to write:

BASE_DIR = Path(os.path.dirname(os.path.dirname(__file__)))

TEMPLATE_DIRS = (
    BASE_DIR.parent.child("templates"),
)

As

TEMPLATE_DIRS = (
    BASE_DIR / ".." / "templates",
)

[mikeorr]

This works on Python 2 but on Python 3 it raises "TypeError: unsupported operand type(s) for /: 'PosixPath' and 'str'". I looked at the pathlib source; it uses 'truediv' and 'rtruediv' and calls some complex methods. But 'truediv' raises the same TypeError on Python 2.

I'm thinking of making a pathlib/pathlib2 extension with some Unipath features, after I fix the outstanding Unipath bugs. I think that might be a better approach than trying to get this to work in Unipath.