Minor update

Code optimization and logic

Changelog v5.1.0:

1. The method getHelper(string $name): Closure is not static anymore
2. The equivalent static is now defined as getHelperBase(string $name): Closure
3. The method isHelper(string $name): bool does not throw any Exception anymore and only returns a strict boolean
4. Internally some code optimization and better logic segmentation: new method getHelperDetails(string $name): array

Your code is not impacted by this update unless your worked with method getHelper() which becomes getHelperBase()