inital draft of date histogram facets and building facet uri's for these facets
added date-facets. changed search format to give proper query uri with the facet for easy consumption. refactored query to a filtered query
fixed filter chaining in the facet uris
fixed stray comma injection in filter substitution code
using dataset for metadata
named the class Icelastic. replaced method by attr_accessor
added extra lib imports
restructured endpoint list and middleware stacks
removed blank line below csv header
lambda endpoint app on / path listing paths