Release of 1.4.24

- b3d74a55cb496427f954628dfe07e59cb965bdf7: Merge pull request #1113 from mattrjacobs/backport-closeable-to-14x
- b6fa398657f23609df1c5d640c04f13cf546fb97: Made HystrixRequestContext Closeable so we can leverage try-with-resources on java 7 and forward
- ced9f74b395f85cf1ec22ff0469e42ed8b703218: Merge pull request #1112 from mattrjacobs/upgrade-14x-nebula-oss
- 0d385916cc83c4e6951a54321c9cb2f21239ad6a: Removing println in build.gradle
- 9ef5b6eab24b77bb39e56f95e0eb93fd353df671: Merge pull request #1110 from mattrjacobs/upgrade-14x-to-rx-1-1-1
- a0d97f8a06a503b01cd9da9412544be28b383539: Special casing the 2 WAR artifacts to not have POMs rewritten
- e5978f97fa2fa8c1093b5ab327188ee9a61f2679: Upgrade netflixoss Nebula plugin to 3.2.3
- 6869ec38517512e76e2cc1c7c78767e94b287f4a: Upgrade to RxJava 1.1.1
- c7f9cfbdc780667a3a594297382db75a786e005a: Merge pull request #1108 from jhinch/javanica-plugins-concurrency-strategy
- 6f162a796437c3dac26a1a1fd16d6e539f37f38b: Javanica HystrixRequestCacheManager should use the concurrency strategy from HystrixPlugins, not the default one directly
- ce6c0b224780925028deedfa0a7e64e6b5886338: Update CHANGELOG.md
- 0dac15bb3a5409ed4cf5890c5964a4ff75b1f79f: Merge pull request #1049 from mattrjacobs/cleanup-unused-imports
- c721ad97a996c724313d0f1cf182cdc38ab8f589: Cleanup unused imports from #1032
