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

commit: https://github.com/kijiproject/kiji-express/commit/4ea04ae7fadd9fd2344d06bb58c0d2d0aafa44cf
kiji-express: [maven-release-plugin] prepare release kiji-express-root-2.0.2

commit: https://github.com/kijiproject/kiji-express/commit/4021bd1ee2c4c5a2ee906c4fa31e0fda6ac3dbf8