Merge pull request #59 from danielkurecka/master

Assert::equal() - Fixed false fail when comparing arrays with mixed type...
Exception form test have higher priority than exception from tearDown. [Closes #52]

When exception from test is thrown and hned exception form tearDown is thrown too then exception from test is thrown from runTest method rather than exception from tearDown. It is more likely that exception from test it one which is interesting for us.
Environment: load Dumper & Assert class in setup()
Dumper: var_export(float) replaced with json_encode(), because var_export uses serialize_precision since PHP 5.5.6/5.4.22
Dumper: constants changed to static variables
Dumper::$dumpDir can be absolute path [Closes #50]
Released version 0.9.4