Releasing Feign

Here are the top things to know about OpenFeign releases.

• OpenFeign uses release branches for major versions, supporting only the last two. For example, version 8 is released from the 8.x branch.
• Releases are automated via travis by applying a tag of v#.#.# to a release branch. Ex. pushing the v7.4.0 tag from the 7.x branch releases feign 7.4.0.
• Releases go to bintray and shortly thereafter sync to maven central.

Here's the release process, using for example version 7.4.0

1. git checkout 7.x
2. git tag v7.4.0
3. git push --tags
4. await https://travis-ci.org/OpenFeign/feign/builds/
5. update examples to use 7.4.0