Support for text symbol

[Salman2301]

When I use text symbol "ｆ" which looks almost the same as "f" the app doesn't detect it.
Would be nice if App treat that symbol same as character f

[Salman2301]

[DadiBit]

To fix it I would implement a Unicode ->ascii filter. I'm pretty sure there are libraries to convert just latin letters (letters like ä, ß and arabic characters should be kept - see #12) 😄