This is only bug fix release. I added MASTER.SCP file. If you already have installed version 1.5.3, please follow how-to from CX1FK posted here: http://www.cqrlog.com/node/890
 
Updated 2013-02-25 05:20 UTC - all files are available in download section. Packages for Precise Quantal are in my personal repo on Launchpad (how to add my ppa is described in download section).