Trim uri before parse

[velios]

First of all, thx for you amazing and very helpful library.

About PR. I'm not sure the suggested argument pre-processing is appropriate. But I think the resulting parsing results can be misleading.

(into {} (uri/parse "  https://example.com/path  "))
=>
{:scheme "  https",
 :user nil,
 :password nil,
 :host "example.com",
 :port nil,
 :path "/path  ",
 :query nil,
 :fragment nil}

[velios]

Don't understand why openjdk8 checks not passed. Changes was trivial.

[plexus]

While trimming at the start seems mostly harmless, trimming at the end does have the potential to introduce unwanted breaking changes. People might be using uri to further normalize the path segment to /path%20%20. I think this is a case of "garbage-in garbage-out", where it's the caller's responsibility to provide reasonable input.

Thank you for your PR, but unfortunately we are not going to accept it at this time.