Release of 1.4.13

- 1866e289dc974bb0e6791b05f85a6890b5d3db23: Merge pull request #839 from mattrjacobs/fix-js-typo
- 0d5fe8b68515a11c663bf712964275c64a6fd410: Fix typo in method name
- 9ca80ab0b01e4ec92d57246d171dc079bed982bf: Merge pull request #838 from mattrjacobs/unit-test-for-command-properties-reset
- d849fb0f9fada12013dcc86f3546ad8fe87dd874: Reinstated HystrixTest and added unit test for modifying semaphore count
- b806672d800ceef2605cb34db0e0b066b2e7a47e: Merge pull request #837 from mattrjacobs/rx-13
- 0dd246fefeb6daf3adb6489a8e210e27facf97a8: Upgrade to RxJava 1.0.13
- ed5bfe732b2e0e1df1e951885e36962b92b332fa: Merge pull request #830 from jeremybull/dashboard-badrequests-optional
- bee55d7f782d23bb803a274af15f27cb2ddc5293: Add validation for rollingCountBadRequests
- 990394e98ba7472b96d90d7246e785d0966ade9a: Update CHANGELOG.md
