kiji-modeling: [maven-release-plugin] prepare release kiji-modeling-root-0.7.0

commit: https://github.com/kijiproject/kiji-modeling/commit/dfe69d85451dc4fbee05da37a414699a647781ef
kiji-modeling: [maven-release-plugin] prepare for next development iteration

commit: https://github.com/kijiproject/kiji-modeling/commit/f0daf1540742f5103610e5b4c7e4b1c59090bb03