Merge pull request #6731 from odin-lang/bill/expand-values-operator

Support `**` as `expand_values` operator: `**x` == `expand_values(x)`

src/parser.cpp

@@ -3474,6 +3474,7 @@ gb_internal Ast *parse_unary_expr(AstFile *f, bool lhs) {
 	case Token_Xor:
 	case Token_And:
 	case Token_Not:
+	case Token_MulMul: // 'expand_values' operator
 	case Token_Mul: // Used for error handling when people do C-like things
 	{
 		Token token = advance_token(f);