File:// support

[johnss]

I want to convert warc to mhtml but it just display mhtml as plaintext, if it use chromium it should render mhtml without problem, probably it because chrome only render mhtml if using file:// protocol, chrome will treat/detect http/https mhtml as plaintext instead of mhtml, so chrome only allow offline file:// for mhtml viewing

Please allow file:// if allowed mhtml to warc converter will be possible