0.5.0

Features

• go_repository replaces new_go_repository for dependencies with
  and without BUILD or BUILD.bazel files. go_repository will
  generate these files using Gazelle if they are not already present.
• Import paths may be specified explicitly using the importpath in
  go_library. This allows for Go subtrees that aren't at the top of
  a repository. It also allows flat BUILD files.
• Gazelle generates BUILD files for multiple platforms. Sources with
  build constraints (tags or filename suffixes) and dependencies
  imported from them are now compiled conditionally using select.
• Link stamping in multiple packages is now supported via the x_defs
  attribute. x_defs may now contain values wrapped in braces (for
  example: {VAR}) which are replaced with values from the workspace
  status files.
• Rules are substantially cleaned up and organized. Assemble, compile,
  and link actions are rewritten in Go, avoiding incompatibilities and
  quoting problems with Bash.
• Preliminary support for toolchains.

Bug fixes

• cgo_library now allows sources in multiple directories.
• cgo_library no longer assumes srcs is a list (it can now include
  select calls).
• go_binary and go_test no longer expose .a files in outputs.
• All rules now allow target names with slashes.
• If multiple packages are present after applying build constraints,
  Gazelle will generate BUILD files for the package matching the
  directory name. If there is no match, Gazelle will report an error.
• Gazelle is much faster when running in external mode on repositories
  with lots of external dependencies.
• Gazelle no longer removes # keep comments from existing sources.
• Many more...