Kramdown::Parser::Docx: Improved handling of underline text run attribute:
Kramdown::Parser::Docx: Improved handling of underline text run attribute:

the `w:u` tag has a `val` attr that determines the type of underline. It may be set to ‘none’ which turns off underline. I added a check to only turn on underline if `val` is not ‘none’:

`<w:u w:val="none"/>`
imazen/repositext,imazen/repositext,imazen/repositext