Update groovy for record, enum, var (#1984)

The 'record' keyword defines a new kind of record class.
'enum' was moved as the same level as the other types, as enums are also kind of classes.
Added 'var' as an alternative to 'def' for defining variables and such.

lib/rouge/lexers/groovy.rb

@@ -23,15 +23,15 @@ def self.keywords
 
       def self.declarations
         @declarations ||= Set.new %w(
-          abstract const enum extends final implements native private
+          abstract const extends final implements native private
           protected public static strictfp super synchronized throws
           transient volatile
         )
       end
 
       def self.types
         @types ||= Set.new %w(
-          def boolean byte char double float int long short void
+          def var boolean byte char double float int long short void
         )
       end
 
@@ -56,7 +56,7 @@ def self.constants
         rule %r(//.*?$), Comment::Single
         rule %r(/[*].*?[*]/)m, Comment::Multiline
         rule %r/@\w[\w.]*/, Name::Decorator
-        rule %r/(class|interface|trait)\b/,  Keyword::Declaration, :class
+        rule %r/(class|interface|trait|enum|record)\b/,  Keyword::Declaration, :class
         rule %r/package\b/, Keyword::Namespace, :import
         rule %r/import\b/, Keyword::Namespace, :import