Emit comment nodes for comments (enlive)
Reverting "Emit comment nodes for comments (enlive)"
Revert "Emit comment nodes for comments (enlive)"

This reverts commit 2b4cae341ef72a04ceb2e6c868c2c9ff7e4ca0c9.
Enlive fixes.

* Avoid comments with children for now.
* New enlive-parser fn for the new pluggable enlive parser api