Update changelog

Author: rushter

CHANGES.md

@@ -1,5 +1,12 @@
 # selectolax Changelog
 
+# Unreleased
+
+- Add `is_fragment` parameter to `LexborHTMLParser` @pygarap
+
+- Add the ability to skip empty text nodes for lexbor backend to `.text`, `.iter`, `.traverse` @pygarap
+
+- Add new properties to lexbor backend: `is_element_node`, `is_text_node`, `is_comment_node`, `is_document_node`.  @pygarap
 
 
 # Version 0.4.3