more idiomatic "is a hash" check; updates changelog date

Author: bmckinney-ebsco

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html). 
 
-## [1.0.8] - 2019-07-09
+## [1.0.8] - 2019-08-12
 ### Fixed
 - Throws error when query fails with a 200 status code and html error message (query = `the meaning of life or 4=2`), see #90.
 - Raises a specific "record not found" error instead of a generic "bad request" error when a record cannot be retrieved, see #88.

lib/ebsco/eds/results.rb

@@ -33,7 +33,7 @@ def initialize(search_results, eds_config = {}, additional_limiters = {}, option
 
         @results = search_results
 
-        if Hash === @results
+        if @results.is_a?(Hash)
 
           @limiters = additional_limiters
           @raw_options = options