v0.12.7-0.20220106.30.dev.8c40d9a

v0.12.7-0.20220106.30.dev.8c40d9a

A pre-release to remove margins of cover page.

Refer to wkhtmltopdf #3692, merge Patching cover page for 0mm margins and correct the patch to works on latest 0.12.7-dev code.