Arrays extend Nette\Utils\Arrays
Refactored cs
Removed useless method toString
Removed getOnlyFilled method
Removed getByKey method ... original grep() method can be used instead
Removed filterByKey .... can be used grep()
Removed testIsValidUrlString .... isUrl() can be used instead
Fixed cs
Removed fix for stupid windows
Refactored mb_ucfirst
Refactored modus method()
Added missing tests
Added fixed docs