XF2 Style iO Dark Mode 2.3.6.0.0

Changelog:

• XenForo 2.2.6 compatibility

Note: This release cannot be used on XenForo 2.1, it is exclusively for XenForo 2.2 only.
Note: This update does not require a UI.X add-on update to function properly.

2021.7.7

Changelog:

• Fixed an issue that caused emails to lose their styling

Note: This release cannot be used on XenForo 2.1, it is exclusively for XenForo 2.2 only.
Note: This update does not require a UI.X add-on update to function properly.
Thanks : @killme