[refactoring] rename dumper

cmd/php-parser/main.go

@@ -182,7 +182,7 @@ func printerWorker(r <-chan result) {
 		}
 
 		if *dump == true {
-			visitor.NewDump(os.Stdout).WithPositions().WithTokens().Dump(res.rootNode)
+			visitor.NewDumper(os.Stdout).WithPositions().WithTokens().Dump(res.rootNode)
 		}
 
 		wg.Done()

pkg/ast/visitor/dumper_test.go

@@ -13,7 +13,7 @@ import (
 func TestDumper_root(t *testing.T) {
 	o := bytes.NewBufferString("")
 
-	p := visitor.NewDump(o).WithTokens().WithPositions()
+	p := visitor.NewDumper(o).WithTokens().WithPositions()
 	n := &ast.Root{
 		Position: &position.Position{
 			StartLine: 1,