RPGMaker Trans v1.99b

Not a big update, unfortunately, but an update to add a feature that was requested and I thought was already in.

• Unused strings are now in a fixed order, rather than the arbitrary order used before. This should make versioning using RPGMaker Trans easier.

I've been playing around with getting XP/VX support working, but nothing concrete is done yet. Partly this is because I don't know much about Ruby programming, but a lot of this is because the scripts out there for reading/writing RPGMaker files aren't written that well (heavy use of global variables, lack of safety checking, highly dependant on Windows platform, and using eval. Eval for crying out loud! gegerlan/rakudayo, you should be ashamed of yourselves - although I am still grateful for you giving me a decent starting point...).