Neoband code refactor

[Therem Harth]

Yes, I'm finally doing it! From here on, all the bookless stuff will be in one source file, and repeating the last spell plus direction will be possible. Also, adding new bookless classes should be less work.

Watch this space...

[Therem Harth]

Okay, done (and all my stupid bugs fixed). Neoband 1.0 will be released in ~5 minutes.

The good
- All bookless spell code is now consolidated in one file
- Everything is much simpler and prettier, with no code duplication
- You can now repeat your last bookless spell by pressing 'P' (shift + 'p')

The bad
- Some of the bookless class quirks (like Sapper recipes blowing up in your face) are gone now. Personally I don't think this is any great loss.

The ugly
- Spell stats are not coded at the moment - and might not be for a while, due to the tedious nature of adding them. I'll probably get to that eventually though.