Ignore case for filter methods

CHANGELOG.md

@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Added the ignore_case argument for `filter_by_text_equal` and `filter_by_text_contains` methods for the `ElementList` class in `filtering.py`
+
 ## [0.10.2] - 2022-11-07
 
 ### Changed

py_pdf_parser/filtering.py

@@ -133,35 +133,57 @@ def filter_by_tags(self, *tags: str) -> "ElementList":
         )
         return ElementList(self.document, new_indexes)
 
-    def filter_by_text_equal(self, text: str, stripped: bool = True) -> "ElementList":
+    def filter_by_text_equal(
+        self, text: str, stripped: bool = True, ignore_case: bool = False
+    ) -> "ElementList":
         """
         Filter for elements whose text is exactly the given string.
 
         Args:
             text (str): The text to filter for.
             stripped (bool, optional): Whether to strip the text of the element before
                 comparison. Default: True.
+            ignore_case (bool): Whether to ignore case sensitivity when filtering for matches. Default: False.
+
 
         Returns:
             ElementList: The filtered list.
         """
-        new_indexes = set(
-            element._index for element in self if element.text(stripped) == text
-        )
+        if ignore_case:
+            new_indexes = set(
+                element._index
+                for element in self
+                if element.text(stripped).casefold() == text.casefold()
+            )
+        else:
+            new_indexes = set(
+                element._index for element in self if element.text(stripped) == text
+            )
 
         return ElementList(self.document, new_indexes)
 
-    def filter_by_text_contains(self, text: str) -> "ElementList":
+    def filter_by_text_contains(
+        self, text: str, ignore_case: bool = False
+    ) -> "ElementList":
         """
         Filter for elements whose text contains the given string.
 
         Args:
             text (str): The text to filter for.
-
+            ignore_case (bool): Whether to ignore case sensitivity when filtering for matches. Default: False.
         Returns:
             ElementList: The filtered list.
         """
-        new_indexes = set(element._index for element in self if text in element.text())
+        if ignore_case:
+            new_indexes = set(
+                element._index
+                for element in self
+                if text.casefold() in element.text().casefold()
+            )
+        else:
+            new_indexes = set(
+                element._index for element in self if text in element.text()
+            )
         return ElementList(self.document, new_indexes)
 
     def filter_by_regex(