v2016.03.28.01

• python_test rules can now have a custom main_module: https://buckbuild.com/rule/python_test.html
• android_binary rules now fail if given an incorrect keystore alias.
• Buck no longer pulls in a dependency if the library does not support the current platform.
• Added a number of settings to control how many threads Buck uses: https://buckbuild.com/concept/buckconfig.html#build.thread_core_ratio, https://buckbuild.com/concept/buckconfig.html#build.thread_core_ratio_max_threads, https://buckbuild.com/concept/buckconfig.html#build.thread_core_ratio_min_threads, https://buckbuild.com/concept/buckconfig.html#build.thread_core_ratio_reserved_cores
• Buck now supports android_prebuilt_aars that do not have a classes.jar file.
• Thanks to @lucidsheep, Buck now supports project generation for an iOS project from the root directory of a project.
• Added the concept of a worker tool to assist in daemonic tools used during the build process: https://buckbuild.com/rule/worker_tool.html
• Buck now supports vendored directories for Go: https://buckbuild.com/concept/buckconfig.html#go.vendor_path
• Thanks to @ray-milkey, Buck no longer tries to run Java methods annotated with @Test on an abstract class.
• Values can now be inserted into AndroidManifest.xml from build files. See https://buckbuild.com/function/flatten_dicts.html and https://buckbuild.com/rule/android_binary.html
• On unix systems, Buck now kills subprocesses when buckd is restarted.
• Buck no longer supports running android instrumentation tests on multiple devices
• Buck's exopackage support now works with Android N devices.
• Thanks to @mikekap, go_test now supports resources: https://buckbuild.com/rule/go_test.html
• The Buck codebase is now using buck autodeps for all dependencies. This feature is still considered experitmental, but other Java-based projects might find it good enough to start trying today. https://buckbuild.com/command/autodeps.html