Re: [dita] DITA 1.1 Doctypes

Are there any vendor concerns with this? I do not really expect any, but I
wanted to ask before making the change.

If not, then I will update the modules as follows:
* In each DTD and module, I'll use public IDs that include version 1.1
* In the catalog, I'll include the 1.1 IDs and the non-versioned IDs
* For any DTD or mod file, the non-versioned public ID means the most
recent version of that file