disable graphics
sleep in main
upgrade SDK
Revert "upgrade SDK"

This reverts commit 7f69e9e5938d238e252bf493281c0b130afe031a.
Revert "sleep in main"

This reverts commit 3ce98d2916d91fbd099417091441cb771bb072f3.
Revert "disable graphics"

This reverts commit eaf954be78eeae927637ed395d72eb515795d6b7.
Merge branch 'master' of https://github.com/darinf/maelstrom_nacl