Makefiles can now have an optional description line as a meta comment which is described in the upcoming LISA 2011 paper. Process IDs are now shown on the --trace separator line when there are multiple make jobs are running. An indentation bug in --trace output was fixed.
A --tasks option was added, similar to that in rake, which gives a list of "interesting" targets. Negative numbers on the "frame" command counts from the other end now. This version should build better on more OSes with various older versions of GNU Readline installed.