update debug support to add html escape for html strings on request.
Default is keep as is. debugString gets new third parameter for this as
bool flag.
Add Create\Email to send basic text emails to several too addresses.
Content replace in subject and body is possible with {} entries.
Default encoding is UTF-8 but others can be set and content will be
converted to this.
The dynamic replace works on all data or can be set per receiver.
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