CQL 1.1.1-SNAPSHOT

Maintenance update of CQL 1.1 translator, addresses:

#61 - Fixed annotations in JSON (annotations no longer contain mixed content)
#68 - Fixed silent ignoring of duplicates in the translator
#82 - Fixed escaped characters not translating to ELM correctly (resulted in a CQL STU comment that needs to be addressed)
#86 - Fixed duplication of CQL in ELM annotations (logged an additional issue to address links from the CQL, #95)
#89 - FHIRHelpers included in the FHIR package
#91 - Fixed validation not catching references to undefined functions
#92 - Fixed validation not catching references to incorrect overloads
#93 - Fixed sort clause expressions not being validated
#99 - Added support for FHIR STU3
#102 - Improved error messages throughout, added detailed messages as an option and set to false as the default