Update library documentation and changelog
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 38c6d05..44ae524 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -217,6 +217,7 @@
- Added an **index** parameter to the ``data()`` method.
- Added the **min_width** and **min_height** options for images.
- Removed method ``clean_file_name()`` and its usage in favor of :doc:`Security Library <libraries/security>`'s ``sanitize_filename()``.
+ - Added **file_ext_tolower** config setting.
- :doc:`Cart library <libraries/cart>` changes include:
- ``insert()`` now auto-increments quantity for an item when inserted twice instead of resetting it, this is the default behaviour of large e-commerce sites.
- *Product Name* strictness can be disabled by switching the ``$product_name_safe`` property to FALSE.
diff --git a/user_guide_src/source/libraries/file_uploading.rst b/user_guide_src/source/libraries/file_uploading.rst
index c7965ae..a92d3af 100644
--- a/user_guide_src/source/libraries/file_uploading.rst
+++ b/user_guide_src/source/libraries/file_uploading.rst
@@ -198,6 +198,7 @@
**file_name** None Desired file name If set CodeIgniter will rename the uploaded file to this name. The
extension provided in the file name must also be an allowed file type.
If no extension is provided in the original file_name will be used.
+**file_ext_tolower** FALSE TRUE/FALSE (boolean) If set to TRUE, the file extension will be forced to lower case
**overwrite** FALSE TRUE/FALSE (boolean) If set to true, if a file with the same name as the one you are
uploading exists, it will be overwritten. If set to false, a number will
be appended to the filename if another with the same name exists.