Habitat - 0.61.0

(https://github.com/habitat-sh/habitat/tree/0.59.0) (2018-08-15)
Full Changelog

New Features & Enhancements

• Launcher simplify reload logic #5404 (baumanj)
• Allow Docker studio image name to be overridden #5425 (christophermaier)
• Adds force upload flag to cli #5407 (eeyun)
• Avoid incomplete package installs #5369 (stevendanna)
• Add variants support to plan-build #5345 (smacfarlane)
• Expose pkg_target in post-build environment files #5373 (christophermaier)
• [plan-build] Set $pkg_target at build time for build programs. #5350 (fnichol)
• [core] Add new PackageTarget from habitat-sh/core#42. #5355 (fnichol)

Behavioral Changes

• Make docker studio behave like chroot studio #5430 (elliott-davis)
• Make the rootless studio the default container studio #5426 (elliott-davis)
• Add timeout for launcher waiting for IPC connection to supervisor #5393 (baumanj)
• Make butterfly output tunable with env_logger #5371 (baumanj)

Bug Fixes

• Update permissions in docker studio to 1777 #5454 (elliott-davis)
• Don't quote HAB_STUDIO_SUP #5451 (christophermaier)
• [studio] Fast-fail when unmounting on Studio cleanup. #5434 (fnichol)
• Provide consistency in supervisor clap cmds, correcting help menu problems #5379 (jeremymv2)
• Allow Supervisor to receive messages from <= 0.59.0 Supervisors #5419 (christophermaier)
• Provide a way to communicate with one's own Butterfly server #5423 (christophermaier)
• ensure RUNTIME_ENVIRONMENT does not include studio prefix #5421 (mwrock)
• If the supervisor terminates with an error result, don't restart it #5387 (baumanj)
• Allow a crashed supervisor to be restarted by the launcher #5384 (baumanj)
• Enable feature flags with any value except the empty string #5375 (christophermaier)
• Remove rust-ipc-socket files when appropriate #5365 (baumanj)
• Make sup-run launch the supervisor in its own session, detached from the TTY #5348 (baumanj)

Merged Pull Requests

• move build logic for rootless studio into buildkite #5452 (elliott-davis)
• Fix exit code for publish when pushing containers to dockerhub #5449 (elliott-davis)
• Fix one more repository spelling #5446 (raskchanky)
• Fix some release issues #5444 (christophermaier)
• add launcher appveyor build and always publish to unstable #5441 (mwrock)
• Merge builder-depot-client and builder-api-client crates into single crate #5431 (eeyun)
• Add fnichol to CODEOWNERS for butterfly component. #5435 (fnichol)
• Promote from the release channel for both promotions #5428 (christophermaier)
• Miscellaneous Buildkite Tweaks #5420 (christophermaier)
• Add rootless studio to release #5401 (elliott-davis)
• Resurrect enough of the old macOS build to work in TravisCI #5418 (christophermaier)
• [ci,rustfmt] Formatting due to rustfmt 0.8.2 in Rust 1.28.0. #5412 (fnichol)
• Add the mac-build.sh script back #5417 (christophermaier)
• [ci] Reimplement lint.sh program for better resilience. #5414 (fnichol)
• More Codeowners Changes #5405 (eeyun)
• add instructions for building a windows launcher #5400 (mwrock)
• Revert some reversions #5410 (baumanj)
• Add auto-build info to docs #5411 (chefsalim)
• Add myself to some things #5397 (scotthain)
• Fix a minor issue with finding the files to run shellcheck against #5396 (baumanj)
• [ci] Add a .buildkite entry to CODEOWNERS. #5395 (fnichol)
• Release from Buildkite #5391 (christophermaier)
• Fix shellcheck lints instead of just suppressing them #5259 (baumanj)
• Send Expeditor notifications to a habitat specific channel #5314 (scotthain)
• Correct typographical issues in CODE_OF_CONDUCT.md #5316 (jerryaldrichiii)
• Print the values of the feature environment variables rather than "true" #5383 (baumanj)
• add blog post covering windows cots development #5376 (mwrock)
• Bump Sprockets to latest #5378 (cnunciato)
• Switch to prost from protobuf crate in Butterfly #5179 (reset)
• Decouple builder-depot-client from protobuf #5372 (chefsalim)
• Add blog post for GKE and GCR #5352 (skpaterson)
• Initial draft of "bastion ring" documentation #5359 (christophermaier)
• [ci,rustfmt] Formatting due to rustfmt 0.6.1 release in Rust 1.27.1. #5356 (fnichol)
• Change spamming message to debug only #5362 (chefsalim)
• Fix pacakge typo to package #5349 (gsreynolds)
• Add myself to maintainers #5313 (scotthain)
• adding DesiredState enum to ServiceStatus proto type #5308 (jeremymv2)
• Allow butterfly server to start given a corrupted rumor file #5295 (jeremymv2)
• Update release doc to add worker promotion #5340 (chefsalim)
• Avoid running out of space on the Mac launcher during the release #5346 (baumanj)
• Update release process documentation #5344 (baumanj)
• Update CODEOWNERS #5304 (baumanj)
• Fix a replacement bug in the docs generator #5338 (cnunciato)
• Add Jon Bauman to authors #5339 (baumanj)
• Add back unintentionally-removed $ on variable #5337 (baumanj)
• Add 0.59.0 Release blog post #5336 (baumanj)
• Fix doc generator, generate 0.59.0 docs #5335 (cnunciato)