New Rule: URL

[CSenshi]

Write rule that validates data to be date.
If data is already datetime class return true.
For strings check if it's correctly formatted.

Description: "The field under validation must be a valid date string or class"

Please see CONTRIBUTING.md for Contribution details 💯

[CSenshi]

Suggestion:
urllib provides parser for urls, you can use it if you want.
from urllib.parse import urlparse
Try to parse url, if error occurs return False

[bakurits]

I would like to work on that