]]> in CDATA is not escaped

[Turbo87]

In #167 it was clarified that no manual escaping of fields should be needed and that the description will be wrapped in a CDATA section for escaping purposes.

According to https://en.wikipedia.org/wiki/CDATA#Nesting ]]> in a CDATA section needs to be encoded as ]]]]><![CDATA[> to not accidentally close the CDATA section.

When I'm putting my test string ("let's try & break this <item> ]]>, shall we?") into the description field however, I currently see this in the output:

<description><![CDATA[let's try & break this <item> ]]>, shall we?]]></description>

[Turbo87]

I've now also reported this at tafia/quick-xml#831 to clarify who is supposed to take care of the escaping in this case.