René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Url Validation","articleBody":"Hello,\r\n\r\nHere are some scenarios where ```url``` shows unexpected behaviour:\r\n1) ```url('http://:pass@www.apache.org:80/path')``` returns ```True``` while it should throw ```ValidationFailure``` as it is invalid userinfo and password format (missing user). A valid one: ```http://user:pass@www.apache.org:80/path```\r\n2)  no check on ports above max limit of 16-bit unsigned integer: validation ```http://example.rocks:65536/``` should fail\r\n3) ```http://www.example.org/../world``` is invalid but ```url``` gives ```True```. ```http://www.example.org/..``` also should be invalid\r\n4) A test from validators library, ```http://a.b--c.de/``` should be valid as per https://tools.ietf.org/html/rfc3986#page-49 but it throws ```ValidationFailure```","author":{"url":"https://github.com/devikasondhi","@type":"Person","name":"devikasondhi"},"datePublished":"2020-04-13T09:18:41.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/155/validators/issues/155"}