tokenization with word ending with "iy" instead of "îy"

In Kurmanji, words ending with "î" when inflected with a form starting with "î" undergo an alternation where the "îî" becomes "iy" in contrast to "îy". That should be included in the tokenization module to make sure that the correct word forms are looked up in the dictionary. 

`dîplomasiyê / dîplomasîyê`

