s/'Closure'/Closure::class
Requiring PHP `~5.5`
Skipping build for PHP 5.4
Removing check for `Closure::bind()` support
#167 - Removing check for `Closure::bind()` support
#167 - s/'Closure'/Closure::class
#167 - don't skip tests depending on `Closure::bind()` support (assuming it as of PHP 5.4)
#167 - s/'Phar'/Phar::class
#167 - s/'Kitchen'/Kitchen::class
#167 - `::class` over string reference
#167 - `::class` over string reference in factory tests
#167 - `::class` over string reference in factory tests
#167 - `::class` over string reference in generator tests
#167 - don't skip tests depending on `Closure::bind()` support (assuming it as of PHP 5.4)
#167 - don't skip tests depending on `ReflectionParameter::isCallable()` support (assuming it as of PHP 5.4)
#167 - `::class` over string reference in method generator tests
#167 - `::class` over string reference in proxy class generators
#167 - `::class` over string reference in method generator
#167 - `::class` over string reference in property generator
#167 - `::class` over string reference in configuration test