Merge pull request #753 from ioquatix/json-dump-options

Pass through all options if present.

lib/json/common.rb

@@ -840,7 +840,7 @@ def dump(obj, anIO = nil, limit = nil, kwargs = nil)
 
     opts = JSON.dump_default_options
     opts = opts.merge(:max_nesting => limit) if limit
-    opts = merge_dump_options(opts, **kwargs) if kwargs
+    opts = opts.merge(kwargs) if kwargs
 
     begin
       State.generate(obj, opts, anIO)
@@ -854,15 +854,6 @@ def self.iconv(to, from, string)
     string.encode(to, from)
   end
 
-  def merge_dump_options(opts, strict: NOT_SET)
-    opts = opts.merge(strict: strict) if NOT_SET != strict
-    opts
-  end
-
-  class << self
-    private :merge_dump_options
-  end
-
   # JSON::Coder holds a parser and generator configuration.
   #
   #   module MyApp