Other features/commands I have found in this new release (or not in features list provided by creator):
.nt - larger nametags
.fp - fastplace
.drop - drops stack
.nr - noRender of orbs and drops
.lag - Lags a server, may result in crash
.cave - cave finder
.color [on/off] - toggle auto-colorer
.color [0-9][a-f] - set color
.type - type spammer
.punch - why ya hittin yourself?
.ext - extinguish flames
.drain - drain lava
Client Options in game menu (edit xray)
Play around with .help and .commands for the rest!
(adding to main post)