Replacer extension and performance improvements

You might have to install the Microsoft Visual C++ Redistributable before running Textractor.
Check out the tutorial video: https://youtu.be/eecEOacF6mw
Please contribute a translation to Textractor if you can! All the text is in https://github.com/Artikash/Textractor/blob/master/include/text.h

Bugfixes:
Translation extensions generating extra newlines.

Features:
Replacer extension. Fairly simple to use.