DEP 0210, some annotations

[Jacob Rief]

Instead of a type string I would use slug

The terminology slug is widely used in Django and everybody knows that it is a string without whitespace, slashes and other special characters, while string has a much wider scope of application.

Do not offer a type float

First, I don't see any use-case for floats, but more important, numbers of type float sometimes are localized using a comma as a decimal separator instead of the dot. This would allow two different URLs for the same Django view and this therefore can be very confusing.

[Tim Graham]

It seems the DEP has been revised such that these comments are no longer applicable.

1. slug is a separate converter.
2. float is not offered.