New Version 0.5.3
cpu: reduce cpu load
con: fix recon loop
con: network latency measurement
ui:  add accepted/rejected shares ratio
ui:  add network latency
ui:  add information about selected devices

I'm uploading this one earlier than planned since it contains two major improvements - slightly reduced cpu load and a fix for recon - thus it doesn't contain everything you requested/suggested yet.

I've added new stats to the terminal ui. There is more information for share transmission now - it looks now like this: