Bukkit

v 2.0.0:

- Restored and somewhat rebuilt from legacy build. 

- BUG: Pistons launching sand or gravel does not delete the original block, but still creates a falling sand entity. Disabling this feature is recommended for this build.

v 1.9.1:
- Fixed some bugs regarding pushed blocks launching random entities.
- Added aforementioned feature to the config.
v 1.9:
- Fixed sand (sort of).
- Added the ability of upward facing pistons to launch you even if there's a block between you and the piston. (Only a test run, doesn't work with horizontal pistons yet.)
v 1.8:
- Remembered to update the changelog finally.
- Added adjustable piston strength
- Added realistic arrows
- Smoothed out movement by overhauling it.
v 1.6:
- Fixed an error in build 1317 and above with sand/gravel and pistons.
v 1.5:
- Added bouncy blocks.
- Changed config from .properties to.yml
v 1.4:
- Added sand/gravel being launched by pistons (Sort of)
- Added support for all entities with pistons.
v 1.3:
- Fixed jumping (sort of)
- Added exemption
- Added support for both Permissions and PermissionsBukkit
- Added pistons ability to launch entities.
v 1.2:
- Fixed movement completely.
- Added adjustable weights of armour.
v 1.1:
- Fixed most of the swaying when a player moves with armour on.
v 1.0:
- Initial release