Here is the changelog I maintained for the help files.
The source-code for these versions are available - just click on the link.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs2.5 License.
You can save them to your hard drive and open them with any text editor, but WordPad is recommended for Windows users.
These versions are not meant for playing. To play the game, go to this page.
To see the changelog for the main files, click here.