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
MM-8783

Refine embedded style test html - omit comment, as this test is not for testing comments
MM-8783

refine the embedded_style_block test such that the output now matches
up against the official repo url as well as omitting the previously expected
comment line
MM-8783

add test for confirming that comments are retained

update MANIFEST to include all current files