Siamand

**Is your feature request related to a problem? Please describe.** A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] **Describe the solution you'd...

we need a unit test for the NumberConverter class.

we need a unit test for the YeSpaceRemover class.

we have to write a unit test for the NorthernSpaceRemover class

we have to write a unit test for the DiacriticalConverter class

we have to write a unit test for the BaseLatinConverter class.

we need a unit test for the BasicArabicConverter class

we need unit test for the UncertainVowelsConverter class

we need unit test for ShortVowelEpenthesisConverter class

we need a unit test for that class