v0.7-pre

• Add the --inventory option to produce an output similar to Ansible host file (via @andrefbsantos, #31)
• Show Terraform outputs as "global" variables (via @lazartravica, #30)
• Fix new outputs format in tfstate (via @rsdy, #43)
• Allow non-string outputs (via @jonasi, #45)
• Create all group as per Ansible inventory script conventions (via @Jonnymcc, #46)
• Check .terraform/terraform.tfstate, for remote state (via @adammck, #41)
• Improve Homebrew installation support (via @reedloden, #37)

This is a pre-release. It works for me, but would benefit from wider testing. Feedback welcome!