name inner node rather than embed to protect against calling underlying functions
properly load compiled mixers
Merge commit '366114c013a96b15e3ca1b6b33f4854c81d5674e' into libxml_upgrade
expose active layer names in slugviewer
Merge branch 'libxml_upgrade'

Conflicts:
	htmltransformer/gokogiri_interface/node.go
	htmltransformer/gokogiri_interface_legacy/node.go