Merge remote-tracking branch 'origin/documentation' into afsin
removed identifier type requirement.
First version of allergies without the extract fields cleanup.
Update problems.md
claenup.ExtractAllFields loop index fix
incremental cleanup commit.
Finished tests, except negation indicator.
Functional Problem List.
Merge branch 'matt-afsin-refactor'
Merge branch 'documentation'
remove problemAct from allergies result
remove observation from allergies hierarchy
final version of allergies similar to 0.5 with reaction multiple
Fixed so broken tests run.
use xml.js instead of common.parseXml
Merge branch 'master' into afsin

Conflicts:
	lib/parser/ccda/oids.js
	
Corrected
label->name
systemName->code_system
allergies dateRange to date to be similar to problems
added identifiers similar to problems
Allergies document