elaborate on EnumMap.new, GlitchMr++

Author: moritz

lib/EnumMap.pod

@@ -18,10 +18,17 @@ return them always in the same order when called on the same object.
     say %e.values;  # prints "1 2\n" if the previous line
                     # printed "a b\n", "b a\n" otherwise
 
-=head1 METHODS
+=head1 Methods
 
 =head2 new
 
+    proto method new(*@, *%) {*}
+    multi method new(*@args, *%pairs) 
+
+Creates a new EnumMap from a list of alternating keys and values, with
+the same semantics as described for hash assigning in the L<Hash>
+documentation.
+
 =head2 elems
 
     method elems(EnumMap:D:) returns Int:D: