Log Message:
www/ruby-loofah: update to 2.7.0

Update ruby-loofah package to 2.7.0.

2.7.0 / 2020-08-26

Features

* Allow CSS properties page-break-before, page-break-inside, and
  page-break-after. [#190] (Thanks, @ahorek!)

Fixes

* Don't drop the !important rule from some CSS properties. [#191] (Thanks,
  @b7kich!)