Adding attributes

[ralfstoermer]

It would be nice not only to clean up HTML, but also to be able to extend it. I use a sub to manipulate. It would be desirable not only to ban or manipulate attributes, but also to be able to add them (for example adding a target attribute depending on the href attribute)

[nigelm]

I'm not doing any perl work any more, so I guess I really ought to see if I can offload this and other modules to someone who might give them some attention