#58 Silent convertion from old wxfb projects to new version

[Zaskar]

Hi there. I'd like to be able to convert an old wxfb project file to a newer version without seeing all those "you will loose data" warnings.

I use wxfb from zinjai, an IDE that has some wxfb very specific integration features. The IDE has a project template that creates both, wxfb and zinjai projects. It comes with a very simple almost empty example frame, all these messages appear and when that project is opened for the first time. I don't include an updated wxfb project template to avoid problems with some Linux distros that still have old wxfb versions in their repos. ZinjaI calls wxfb with -g every time it sees the wxfb project file modified. I would like to call it with some extra argument (for instance, --quiet) in order to avoid confusing a new user with these messages.

Also, in order to detect when to use safely this new argument, I'll also need something like "--version", to detect if user's wxfb installation is up to date.

I think this (specially --version) will be very useful for other ides/tools that use (an therefore promote) this great tool.