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

commit: https://github.com/kijiproject/kiji-schema/commit/11284b9d91e8e980ab21cd3a487f23cca5377196
kiji-schema: [maven-release-plugin] prepare release kiji-schema-root-1.3.1

commit: https://github.com/kijiproject/kiji-schema/commit/510a42d82ccc7e8e97418c00d3b252af16c3a5ee