The fetch_html() method needs to keep comments in HTML, to be consistent
with the read() method.
pushing test file so we can develop full test using HTML fetch from
raw github site.
tweak test file
when searching for embedded <style> tags, there is no such format which
also has an href attribute. the code within the loop that purported to
fix up these sections was therefor never executed, and it turns out that it
was completely broken. it was attempting to run regex over an array ref, for
example. all this is now fixed and these sections do have the url() references
properly adjusted.
Merge pull request #1 from khera/master

Accept pull request from Vivek Khera which resolves problems whereby html comments became lost and local style blocks with "url()" references were not absolutized