Resolve SNAPSHOT dependencies before release.
[maven-release-plugin] prepare release kiji-express-0.6.0
[maven-release-plugin] prepare for next development iteration
EXP-62. Add support for column filters defined in a
ModelEnvironment.

This commit defines Express column filters as Avro records and in a
ModelEnvironment, which can be converted into Kiji column filters
used in a Kiji data request.

Reviewed by: kiyan
EXP-108. Deprecate and remove `express script`

issue: https://jira.kiji.org/browse/EXP-108
review: https://review.kiji.org/r/779
EXP-146. Fall back to $HADOOP_HOME/lib/native/ for native libraries.

If an architecture-specific subdirectory does not exist, check one
level higher in the directory structure.
EXP-148. Upgrade to cdh 4.3.
EXP-131. Better programmatic API for building model definitions and environments

 - converts Avro records to Scala case classes up-front.
 - hide accessors exposing Avro records.
 - Renaming:
   - KVStore becomes AvroKVStore
   - KVStoreSpec becomes KVStore
   - FieldBinding becomes AvroFieldBinding
   - FieldBindingSpec becomes FieldBinding

issue: https://jira.kiji.org/browse/EXP-131
review: https://review.kiji.org/r/791
EXP-151. Stop bundling KijiSchema in the tarball.

This will use the KijiSchema jar from $KIJI_HOME/lib.
EXP-120. Implement a trait users can extend to make their own prepare phase.

issue: https://jira.kiji.org/browse/EXP-120
review: https://review.kiji.org/r/793