Log Message:
Update to 0.7:

Experimental version released on October 18th, 2013.

* Made failures from testers more resilent.  If a tester fails, the
  corresponding test case will be marked as broken instead of causing
  kyua to exit.

* Added the '--results-filter' option to the 'report-html' command and
  set its default value to skip passed results from HTML reports.  This
  is to keep these reports more succint and to avoid generating tons of
  detail files that will be, in general, useless.

* Switched to use Lutok 0.3 to gain compatibility with Lua 5.2.

* Issue 69: Cope with the lack of AM_PROG_AR in configure.ac, which
  first appeared in Automake 1.11.2.  Fixes a problem in Ubuntu 10.04
  LTS, which appears stuck in 1.11.1.