Fix language matching.

Author: gkellogg

lib/shex/algebra/language.rb

@@ -8,7 +8,7 @@ class Language < Operator::Unary
     def match?(value, depth: 0)
       status "", depth: depth
       if case expr = operands.first
-        when RDF::Literal then value.lanuage == expr.to_sym
+        when RDF::Literal then value.language == expr.to_s.to_sym
         else false
         end
         status "matched #{value}", depth: depth

lib/shex/algebra/value.rb

@@ -14,7 +14,7 @@ def match?(value, depth: 0)
       status "", depth: depth
       if case expr = operands.first
         when RDF::Value then value.eql?(expr)
-        when Stem, StemRange then expr.match?(value, depth: depth + 1)
+        when Language, Stem, StemRange then expr.match?(value, depth: depth + 1)
         else false
         end
         status "matched #{value}", depth: depth