fix: remove comments when parsing XML or HTML (#210)

* Update xml.py

remove comments while parsing

* change logged in CHANGLOG and editted version

* make tidy

* editted version

* new version 0.4.8-dev1

* editted version

* Update CHANGELOG.md

Co-authored-by: cragwolfe <[email protected]>

---------

Co-authored-by: cragwolfe <[email protected]>

Author: natygyoon

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.4.8
+
+* Modified XML and HTML parsers not to load comments.
+
 ## 0.4.7
 
 * Added the ability to pull an HTML document from a url in `partition_html`.

unstructured/__version__.py

@@ -1 +1 @@
-__version__ = "0.4.7"  # pragma: no cover
+__version__ = "0.4.8"  # pragma: no cover

unstructured/documents/xml.py

@@ -32,7 +32,11 @@ def __init__(
             are using a stylesheet, you likely want the XMLParser.
         """
         if not parser:
-            parser = etree.XMLParser() if stylesheet else etree.HTMLParser()
+            parser = (
+                etree.XMLParser(remove_comments=True)
+                if stylesheet
+                else etree.HTMLParser(remove_comments=True)
+            )
 
         self.stylesheet = stylesheet
         self.parser = parser