Version 2.0 released for Windows and source

After several weeks of development, including much code refactoring, updating to SDL 2.0 and adding a new menu system and new features, Help Hannah's Horse version 2.0 is finally available.

When I did the initial release back in 2009, I never expected to pick this project up again 11 or so years later, but I started looking at the code, drawing some new sprites where they were needed and then got carried away adding new features!

Among those features new since 1.2:

• A new menu system. It's no longer necessary to use particular key presses to bring up things like the credits or high score table or to turn the music off!
• Three difficulty modes:
  • Easy (more or less as the standard was, albeit with more powerpills on several levels)
  • Hard (one ghost moves more quickly; a more limited number of powerpills
  • Insane (all ghosts move faster; limited field of view thanks to fog-of-war
• A new thief power-down. When collected, makes Hannah drop coins rather than picking them up.
• A new animation for the "freeze time" powerup.
• An icon for the Windows exe
• Autotools-based build system, replacing my roll-your-own Makefile with something more portable

There are probably other things that I've forgotten. The main thing is, it's a decent improvement from 1.2 and the move to SDL 2.0 should mean improved performance.