Bug fixes, statistics, water damaging, water animation

This release contains a lot of bug fixes. However there are some new features, too!

New features:

• BStats statistics integration
• Water damaging to mobs and players
• Water animation (hot water effect)

Bug fixes:

• Problems with uncompatible (from old versions) config files
• Water disappears like lava in very old Minecraft versions
• Blocks with the same coordinates but different worlds have a problem
• Errors on the first run (missing config.yml file)
• Error while plugin folder doesn't exists

Other:

• Spigot plugin webpage update
• README update
• Some changes under the hood