Update versions for release
[maven-release-plugin] prepare release kiji-express-root-1.0.1
[maven-release-plugin] prepare for next development iteration
EXP-150. Make Express entityIds serializable.

issue: https://jira.kiji.org/browse/EXP-150
review: https://review.kiji.org/r/1608
EXP-152. Refactor Implicits object into a trait.

issue: https://jira.kiji.org/browse/EXP-152
review: https://review.kiji.org/r/1607