New Features in ComputerCraft 1.66:

* Added Command Computers
* Added new API: commands
* Added new programs: commands, exec
* Added textutils.serializeJSON()
* Added ILuaContext.executeMainThreadTask() for peripheral developers
* Disk Drives and Printers can be renamed with Anvils
* Fixed some bugs and crashes

Type "help changelog" to see the full version history.
