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

commit: https://github.com/kijiproject/kiji-schema-shell/commit/74c064f131722c867302ed0b47add55e57ac5726
kiji-schema-shell: [maven-release-plugin] prepare release kiji-schema-shell-1.3.1

commit: https://github.com/kijiproject/kiji-schema-shell/commit/4d9cee590bc69a172345368d1300f0258c9308f9