kiji-scoring: [maven-release-plugin] prepare release kiji-scoring-0.12.0

commit: https://github.com/kijiproject/kiji-scoring/commit/b85cfb2e092eb115ae2731076511e4107765db13
kiji-scoring: [maven-release-plugin] prepare for next development iteration

commit: https://github.com/kijiproject/kiji-scoring/commit/97bea745bb8a708aba121047fa940f47031f899f