Update UMLS Version

[radamson]

• Updates the version of UMLS from 2018AB to 2019AB.
• Create msgpack files with wb open mode to avoid encoding issues encountered during debugging.
• Remove ValueSets that use NDF-RT which has been replaced by MED-RT
  • See the 2019AB Release Notes
• Fix issue where #import_valueset returned a Inferno::Terminology::Valueset instead of the expected Set

Submitter:

• This pull request describes why these changes were made
• Internal ticket for this PR:
• Internal ticket links to this PR
• Internal ticket is properly labeled (Community/Program)
• Internal ticket has a justification for its Community/Program label
• Code diff has been reviewed for extraneous/missing code
• Tests are included and test edge cases
• Tests/code quality metrics have been run locally and pass

Reviewer 1:

Name:

• Code is maintainable and reusable, reuses existing code and infrastructure
  where appropriate, and accomplishes the task's purpose
• The tests appropriately test the new code, including edge cases
• You have tried to break the code

Reviewer 2:

Name:

• Code is maintainable and reusable, reuses existing code and infrastructure
  where appropriate, and accomplishes the task's purpose
• The tests appropriately test the new code, including edge cases
• You have tried to break the code

[okeefm]

Changes look good to me.