* Restored FFI to working order
* Disabled incompatible tests, fixed string conversion
* Use extension_loaded instead of checking PHP version
* Added better checks for FFI
* Do not build FFI deps if no FFI is present
* mv src -> ext, lib -> src to be more in line with PHP module expectations
* Fixed dependency for ffi test
* Fixed path in format-check to C source
* CRT will now try the extension first, then FFI
* Added composer config, added IO/error tests using phpunit
* Added ApiGen doc comments
* Added test to ensure last_error is not set from loading up the CRT