Underscore in URL is handled differently than commonmark 0.27.0 #380
Description
see: https://johnmacfarlane.net/babelmark2/?text=https%3A%2F%2Fderp.com%3F_test_%3D1
https://derp.com?_test_=1
commonmark 0.27.0
<p>https://derp.com?_test_=1</p>
markdown.it
<p>https://derp.com?<em>test</em>=1</p>
Is this unspecified per spec?