Chisel 1.5.8.4

This is a pre-release of Chisel

• changelog: https://github.com/EoD/Chisel/blob/master/changelog
• full changelog: https://github.com/EoD/Chisel/commits/v1.5.8.4

Although compatibility with the final release is likely, it is not guaranteed.
Use at your own risk!

• This jar is compatible with both Minecraft 1.7.2 and 1.7.10
• "Chisel-1.7-1.5.8.4-dev.jar" is for mod developers only