@ensisoft:

1. meta-data is usually pretty specific to the game engine you're using. It wouldn't be terribly useful to include animation meta-data on spritesheets unless everyone used the same game creation framework. However, the convention used here is pretty standard: 32x32 pixel tiles, 4 frames of animation, going from left to right (or top to bottom, for the larger 64x96 water wheel and 64x64 windmill), then repeating: 1, 2, 3, 4, 1, 2, 3, 4, and so on. 
2. All the tiles are aligned exactly to a 32x32 pixel grid. If you're seeing bleedover from an adjacent tile, then your game engine may not be set precisely enough. Again, some engines need some empty padding space around sprites or tiles, but this is actually atypical. You can account for this by adding a single pixel border around each tile using software like Tiled, GIMP, or Piskel. Let me know if you'd like more information about that... or if I'm totally misunderstanding your concern. :P