Modified the txt2html.dict to have it munge email addresses to deter spam harvesters. Per:
www.cdt.org/speech/spam/030319spamreport.pdf
|[a-zA-Z0-9_+-.]+@([a-zA-Z0-9][w.+-]+.[a-zA-Z]{2,})|
-> mailto:$&
Changed to:
|([a-zA-Z0-9_+-.]+)@([a-zA-Z0-9][w.+-]+.[a-zA-Z]{2,})|
-h-> $1 AT $2
