0.2.1           0.2.1           Release 0.2.1 (2016-03-21)

        Baseline: 19b5675

        Extra cherry picks:
           + 068a661: GPLv2 + Classpath exception compliance: ship the source code of jformatstring
           + a18add1: Adds the source of the checker framework
           + f6c24de: GPLv2 + Classpath exception compliance: ship the source of checker_framework
           + c95cb5f: Add source for Javac
           + 4017d28: Fix fallout of incorrectly merged review (3921)

        Incompatible changes:

          - Skylark rules that are available from their own repository will
            now issue a warning when accessed through @bazel_tools.
          - Set --legacy_bazel_java_test to off by default. java_test will
            now have a slightly different behaviour, correctly emitting XML
            file but, as a downside, it needs correct declaration of the
            test suite (see https://github.com/bazelbuild/bazel/issues/1017).
          - Labels in .bzl files in remote repositories will be resolved
            relative to their repository (instead of the repository the
            Skylark rule is used in).
          - Renamed proto_java_library to java_proto_library.  The former
            is now deprecated and will print out a warning when used.
          - android_sdk now compiles android_jack on the fly from
            android_jar, which means android_jar must be a jar and
            android_jack is now deprecated. The Jack tools (jack, jill,
            resource_extractor) must be specified.
          - Any project that depended on the objc_options rule will be
            broken. Can be fixed by adding attrs (infoplists,copts) directly
            to rules depending on the options.
          - .aidl files correctly require import statements for types
            defined in the same package and the same android_library.

        New features:

          - Experimental Windows support is available.
          - Experimental support for writing remote repository rules in
            Skylark is available.
          - iOS ipa_post_processor attribute allows for user-defined IPA
            edits.
          - Adds a to_json method to Skylark structs, providing conversion to
            JSON format.
          - Native python rule can depend on skylark rule as long as skylark
            rule provides 'py' provider.
          - When using both --verbose_failures and --sandbox_debug, Bazel
            prints instructions how to spawn a debugging shell inside the
            sandbox.
          - add flag --sandbox_add_path, which takes a list of additional
            paths as argument and mount these paths to sandbox.

        Important changes:

          - @androidsdk//:org_apache_http_legacy added for the legacy Apache
            classes for android sdk version 23 and above.
          - Genrules correctly work when used with bazel run.
          - When namespace-sandbox is run with the -D (debug) flag and
            inside a terminal, it spawns a shell inside the sandbox to aid in
            debugging when the sandboxed command fails.
          - Added --artifact to workspace generator for generating workspace
            and build file rules from artifact coodrinates.
          - Specifying --experimental_android_resource_shrinking on the
            command line will enable a resource shrinking pass on
            android_binary targets that already use Proguard.
          - J2ObjC updated to 1.0.1 release.
          - Added "root_symlinks" and "symlinks" parameters to Skylark
            runfiles() method.
          - You can no longer use objc_binary targets for the xctest_app
            attribute of an ios_test rule.
          - Enable overriding jsonnet binaries and stdlib for Jsonnet rules.
          - mount target of /etc/resolv.conf if it is a symlink.
          - Tests that failed to build because execution was halted no longer
            print their status.
          - Bazel warns if a cc rule's includes attribute contains up-level
            references that escape its package.
          - Add repository_ctx.download and repository_ctx.download_and_extract
            function.
