fix footer processing

src/book.py

@@ -495,6 +495,15 @@ class Book:
 
         self.images = imgs
 
+    def _process_footer(self):
+        """
+        Function to process <div title="footer"> tags.
+        All the tags will be deleted from file.
+        """
+        divs = self.body_tag.find_all('div', {'title': 'footer'})
+        for div in divs:
+            div.decompose()
+
     def _process_div(self):
         """
         Function to process <div> tags. All the tags will be deleted from file, all content of the tags will stay.
@@ -608,6 +617,7 @@ class Book:
             self._process_images()
             self.log(f'{len(self.images)} images have been processed.')
 
+            self._process_footer()
             self._process_div()
 
             self.content = self.body_tag.find_all(recursive=False)