post-processor/vagrant: show file being compressed [GH-314]
provisioner/shell: retry uploads if reboot [GH-282]
packer/rpc: when communicator abruptly exits, set exit status 123
packer/plugin: Killed bool to avoid panics when killing clients
packer/plugin: Set killed in the kill clients method
Update CHANGELOG
website: add a troubleshooting section for the shell provisioner
Add sleep tip about ssh
Fix syntax error
Merge pull request #319 from ahawkins/patch-1

Add sleep tip about ssh
website: tweak the formatting of the sleep tip
packer: fix data race in communicator
packer/rpc: get rid of data races in tests
packer/plugin: fix data race reading stdout in Client
packer/plugin: get rid of data race setting exited for Client
packer/plugin: remove race in Exited()
communicator/ssh: get data race tests passing
Make travis run data race tests
scripts: set PACKER_RACE to build with race detector
scripts: build go get ./... early to speed up builds