Google Code-in

The current Windows build is not fully functional because the Tesseract 3.04 release dll is not present (we have the debug one). Compiling the dll has been a troublesome task for us and we have been having issues ever since we pushed the Tesseract version from 3.03 to 3.04.

On the other hand, Tesseract 4.00 was released a few weeks ago and the change file claims that accuracy has improved a lot. So it makes sense that we update.

We haven't looked into this so we don't know how hard it is. It might be a matter of replacing dependencies or it might require lots of code changes. The training files are likely to need replacement, too.

This may be hard - and of course we'll take that into consideration when it's time.