Helpers::purge(): do not suppress mkdir() errors
Assert::match() - removed support for %[...]% due to insufficient implementation
Assert::match: regexp is ungreedy with bigger backtrace limit
Dumper: improved escaping of strings
CliFactory: PHP parameter -c is added only once
Assert::exception() returns exception
Helpers::setup() loads class Tester\Runner\Job, because is some cases autoloading is not available in handleError()
Dumper: short arrays are dumped in single line