Version 0.4.12
FIX: modify environment when forking a command due to bugs in pyinstaller and setuptools
FIX: when adding new config value, only check that section of config
BINARIES:
Darwin: https://downloads.dcos.io/binaries/cli/darwin/x86-64/0.4.12/dcos
Linux: https://downloads.dcos.io/binaries/cli/linux/x86-64/0.4.12/dcos
Windows: https://downloads.dcos.io/binaries/cli/windows/x86-64/0.4.12/dcos.exe