Release of 1.4.3

- 2cf6b97422b2f337d73cfa0d076f22cce58dd14a: Merge pull request #731 from mattrjacobs/revert-to-java-6
- 31e92dcba4bd93fc4fa4892509170583028bb206: Revert back to JDK6
- 7983885ff4b6f9853c9c7c7d0feee15b47184146: Merge pull request #728 from mattrjacobs/add-semaphore-rejected-to-dashboard
- d0e40ee83b6d602865376227faf571bd41e39945: Add semaphore-rejected metric to commands in Hystrix dashboard
- 1484e70dc189870d82c5e49af9d02c4ae0abb176: Merge pull request #711 from eirslett/feature/use-archaius-for-plugin-lookup
- 712fef322c2e46cbce217801e2a1d3207538f2f2: Merge pull request #671 from hanskr/AJP_chunked_fix
- 0bca7809610ab662c1502048ecf9ba7e8fdb16a2: Update CHANGELOG.md
- 1bf1b83017b5746902082d58171732166dfc358c: Update CHANGELOG.md
- 82b8e6cf05618dd3ad5e83212df6a1209ccf7344: Load configuration from hystrix-plugins.properties as well
- 07460fba3d51e5b32c3d512b2cf149976316a2dd: Use Archaius for Hystrix plugin setup
- ede26ab46c48a1776f927b0e4c839d1b15a662a1: Don't pass on the Transfer-Encoding header when streaming, it messes up AJP/mod_JK somehow.
