ChangeLog:
0.040 2007-12-26
major rewrite of pod:
- describe all possible forms of redirectors
- list available options
- explain how run3() works
fix#31343 by using the three argument form of open() for files;
unfortunately that isn't available before Perl 5.6.0,
hence "use 5.006_00"; also use lexical filehandles everywhere
implement options append_{stdout,stderr}; add test cases
edit META.yml so that the profiling modules IPC::Run3::Prof*
(which aren't of general use) won't show on CPAN
