[Feature request] Add ability to auto-replace words by Dictionary<string,string> or, on Java, HashMap

This simple feature will be a really great as an alternative solution for fb2 document instant editing. For example, if OCR error inserted in the book text "Эдварде" instead "Эдвардс", I can really quick get rid of this annoying OCR error.

And, I believe so, it's really simple to implement, at least on basic level (without regexp etc.)