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0.6.0

Release 0.6.0 (2017-09-28)
@a-googler a-googler tagged this 28 Sep 14:36 
Baseline: 87cc92e5df35d02a7c9bc50b229c513563dc1689

Cherry picks:
   + a615d288b008c36c659fdc17965207bb62d95d8d:
     Rollback context.actions.args() functionality.
   + 7b091c1397a82258e26ab5336df6c8dae1d97384:
     Add a global failure when a test is interrupted/cancelled.
   + 95b0467e3eb42a8ce8d1179c0c7e1aab040e8120:
     Cleanups for Skylark tracebacks
   + cc9c2f07127a832a88f27f5d72e5508000b53429:
     Remove the status xml attribute from AntXmlResultWriter

Incompatible changes:

  - Noop flag --deprecated_generate_xcode_project deleted.
  - Objects in Skylark are converted to strings in a more descriptive
    and less harmful way (they don't leak information that shouldn't
    be accessed by Skylark code, e.g. nondeterministic memory addresses
    of objects).
  - `set` is deprecated in BUILD and .bzl files, please use `depset`
    instead. Ordering names have also been changed, please use
    "default", "postorder", "preorder", and "topological" instead of
    "stable", "compile", "naive_link", and "link" correspondingly.
  - Integer overflow (on signed 32 bit numbers) in BUILD/bzl files is
    an error.
  - Keyword-only syntax in a function definition is now forbidden
      e.g. `def foo(a, *, b)` or `def foo(a, *b, c)`
  - --incompatible_comprehension_variables_do_not_leak defaults to
    "true."
      Iteration variable becomes inaccessible after a list/dict
    comprehension.

New features:

  - There is now a 'siblings' query function. See the query
    documentation for more details.
  - Added the print_action command, which outputs the
    actions needed to build a given target in the form of an
    ExtraActionSummary proto in text format.
  - android_binary now supports proguard_apply_dictionary to specify
    a custom dictionary to use for choosing names to obfuscate
    classes and members to.

Important changes:

  - 'strip' action is now configured via feature configuration
  - Flags from action_config get added first to the command line
    first,
    before the flags from features.
  - `bazel info output_path` no longer relies on the root directory
    filename being equal to the workspace name.
  - The `print` function now prints debug messages instead of
    warnings.
  - speedup of incremental dexing tools
  - --announce_rc now controls whether bazelrc startup options are
    printed to stderr.
  - Removing a few unused objc_provider keys.
  - Improved logging when workers have to be restarted due to its
    files having changed.
  - Top-level `if` statements are now forbidden.
  - Java protos are compiled to Java 7 bytecode.
  - All Android builds now use the desugar tool to support some Java
    8 features by default. To disable, use the
    --nodesugar_for_android flag.
  - Skylark-related options may now appear as "common" command
    options in the .bazelrc
  - Python is now required to build bazel.
  - When the lvalue of an augmented assignment is a list, we now
    throw an error
      before evaluating the code (e.g. `a, b += 2, 3`).
  - New --build_runfile_manifests flag controls production of
    runfiles manifests.
  - Enable debug info for Java builds
  - Allow java_lite_proto_library in the deps of android rules.
  - .so files in APKs will be memory-page aligned when
    android_binary.nocompress_extensions contains ".so" and
    --experimental_android_use_nocompress_extensions_on_apk is
    specified.
  - Skylark providers can specify allowed fields and their
    documentation.
  - Support ctx.actions.args() for more efficient Skylark command
    line construction.
  - The remote HTTP/1.1 caching client (--remote_rest_cache) now
    distinquishes between action cache and CAS. The request URL for
    the action cache is prefixed with 'ac' and the URL for the CAS
    is prefixed with 'cas'.
  - `JavaInfo` is a preferred alias to `java_common.provider`.
  - J2ObjC version updated to 2.0.3.
  - A new Java coverage implementation is available. Makes possible
    coverage for Skylark JVM rules.
  - Make proguard_apply_dictionary also apply to class and package
    obfuscation, not just class members.
  - When using the dictionary literal syntax, it is now an error to
    have duplicated keys (e.g.  {'ab': 3, 'ab': 5}).
  - android_binary.nocompress_extensions now applies to all files in
    the APK, not just resources and assets.
  - The apple_genrule rule that is distributed with Bazel has been
    deleted. Users who wish to use genrules with Xcode's
    DEVELOPER_DIR set should use the rules in
    https://github.com/bazelbuild/rules_apple instead.
  - The swift_library rule that is distributed with Bazel has been
    deleted. Users who wish to compile Swift should use the rules in
    https://github.com/bazelbuild/rules_apple instead.
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