Why is craft adding a rel attribute with inline styles in my textarea? It looks like redactor is adding a rel attribute to images as they are added to content via the RTE. Removing the rel attribute and then switching views adds it back in again.

How can I remove the rel attribute as it's affecting validation: https://validator.w3.org/nu/?doc=http%3A%2F%2Fgrowthwise.com.au%2Fnews%2F2015%2Fgetting-organised-for-tax-sucks-is-there-an-easier-way
Looks like this was a Redactor bug they fixed back in 10.1.

The latest version of Craft (2.4.2684) is currently running Redactor 10.2.2, so make sure you're Craft installation is up-to-date.