- fixed case where "splitstr" and "str" types would be kept for the same   field (whereas "splitstr" only should be kept) to generate proper ES   mapping - merge_record recursively
- fixed case where "splitstr" and "str" types would be kept for the same
  field (whereas "splitstr" only should be kept) to generate proper ES
  mapping
- merge_record recursively

biothings/biothings.api,biothings/biothings.api