kiji-rest: [maven-release-plugin] prepare for next development iteration

commit: https://github.com/kijiproject/kiji-rest/commit/4673121257ad5999c28f3272d15abdab7347b824
kiji-rest: [maven-release-plugin] prepare release kiji-rest-root-1.3.1

commit: https://github.com/kijiproject/kiji-rest/commit/5c4dc614f033d918fa6e9f1c438f3740fb66801c