Fix crash on open and close element due to null reference
Handle list as bibliography if already partially handled elsewhere
Disable superscripted footnote handling by default.
Fix for superscripted footnote handler
Improvements to enclosed reference handling
Remove redundant output
Exclude pre-classified references from footnote classifier
Initial structure for superscripted footnote parsing with ordered list
Initial structure for superscripted tolerance for single misaligned footnote
Finish implementation of superscript footnote classifier based on list.

Allows for one footnote to be non-superscripted.
Fixes for dash list classifier

(Broken by new superscript classifier)
Fixes for superscript classifier (can process @rend=normal; just not title)
Add linguistic cue for "Literature Cited"