Fix setup/teardown bug. Add support for runner addons

lib/fastest.rb

@@ -1,6 +1,6 @@
-at_exit{$c.map{|t|i=t.new;i.setup rescue 0;$t=t.instance_methods(!0).map{|m|m\
-=~/^test_/?(i.send m;1):!0}.compact;i.teardown rescue 0};printf"\e[0m\n%fs\n%d\
- tests, %d assertions, %d failures\n\n%s",Time.now-$n,$t.size,$a,$f.size,$f.\
+at_exit{$c.map{|t|i=t.new;$t=t.instance_methods(!0).send($r){|m|m=~/^test_/?(i\
+.setup rescue 0;i.send m;i.teardown rescue 0;1):nil}.compact};printf"\e[0m\n%fs
+%d tests, %d assertions, %d failures\n\n%s",Time.now-$n,$t.size,$a,$f.size,$f.\
 map{|f|"\e[1;31mFailure\e[0m \e[97m@\e[33m #{f}\e[0m"}.join(?\n);exit 1 if$f[0]
 };class A;def a c;$a+=1;print"\e[3"+(c ?"2m.":"1mF");$f<<caller[0]if !c;end;def
-A.inherited(b);$c<<b;end;end;$n=Time.now;$f=[];$c=[];$a=0;$t=[]
+A.inherited(b);$c<<b;end;end;$n=Time.now;$f=[];$c=[];$a=0;$t=[];$r='map'