Java Edition Classic server 1.8.3

1.9 was a Classic server version released with 0.28 on October 27, 2009.

The README file for this version labels it as "1.8.3", but the README for 1.9.1 changes this label to "1.9", implying that this version was mistakenly labeled "1.8.3" while actually being 1.9.

Additions

 * Added server support for all features added in 0.28.
 * Added support for survival multiplayer.
 * This is still a work in progress, and was not publicly available on the website.
 * Was very buggy at this time.

Fixes

 * Fixed exploit where someone logging in with an illegal name would cause players to disconnect.