Requests with '+' are converted to ' ', even when urlencoded as '%2b'

[tyzoid]

Demonstration of the issue:

$ curl https://apilabs.tyzoid.com/api/hello/test/test++
{
    "message_a": "Hello test",
    "message_b": "Hello test  "
}

Changing

if (preg_match(":^$regex$:", urldecode($this->url), $matches)) {

to

if (preg_match(":^$regex$:", $this->url, $matches)) {

in findUrl() fixes this issue, but investigation is needed to ensure this does not break other intended functionality.