Small bug related to special letters: я -> ya #BUG

[abduakhatov]

When translated from latin the text to cyrillic-russian. Example translated -
using lib: ("ya neznayu" -> "ыа незнаыу")
supposed to be: ("ya neznayu" -> "я незнаю")

[skoval00]

This is expected behaviour. Right now project does not have manpower to fix similar problems(#12) since it requires some redesign. You can apply pull-request #13 for yourself and add any conversions you like as a temporary workaround.

[barseghyanartur]

Pull request #13 was almost ok, besides that some tests were failing. It's the right approach to broaden the pre_processor_mapping and reversed_pre_processor_mapping for such cases. Help here is highly appreciated.

[abduakhatov]

Yeah, for sure bro, sooner I will be free from my project, so except the pull request regarding the bug mentioned, I am going to add languages from two different language families. Still, thank you for this project