Improve XML logging

Hi,firs thanks very much for this perfect ftp client.

I want make a suggestion. Can you add append feature for XML logs? as text logs?

when i was do new transfer, my old trasfer log was delete. and i can see only new log.

when i add filename session stamp, then i have a lot files end of month.

Thanks for your suggestion.

But that's not a good solution. Appending XML to another XML results in an invalid XML.