Set version to 1.2.0-SNAPSHOT before release.
SCHEMA-507. Fix the documentation for KijiTableKVDB.

When the key doesn't exist in a KijiTableKeyValueDatabase, an IOException
is thrown instead of returning null. This should be fixed in a future
version but for now, let's fix the documentation.
Change schema version to 1.2.0 in release notes.
Update dependencies before release.
[maven-release-plugin] prepare release kiji-schema-root-1.2.0
[maven-release-plugin] prepare for next development iteration
SCHEMA-514. Fixed a message formatting problem when deleting all the values from a cell.

review: https://review.kiji.org/r/915/
issue: https://jira.kiji.org/browse/SCHEMA-514
SCHEMA-485. Add profiling pointcuts for HBase reads/writes

Added pointcuts for direct Kiji writes to the LogTimerAspect,
and making LoggingInfo public for use in KijiMR.
SCHEMA-515. Expose table and data request in HBaseKijiRowData.

This commit allows framework developers to access the table and data
request that are part of HBaseKijiRowData. In particular, this
facilitates framework developers making shallow copies of row data
with configuration changes.

Reviewed by: milo
SCHEMA-506. Implement validation logic during table layout updates

- Adds a TableLayoutUpdateValidator that focuses on validating Avro schema changes.

issue: https://jira.kiji.org/browse/SCHEMA-506
review: https://review.kiji.org/r/900
SCHEMA-506. Implement validation logic during table layout updates

issue: https://jira.kiji.org/browse/SCHEMA-506
review: https://review.kiji.org/r/944
SCHEMA-483. Integrate ZooKeeper clients into the testing framework

issue: https://jira.kiji.org/browse/SCHEMA-483
review: https://review.kiji.org/r/949
SCHEMA-6. Column qualifier must be URL-encoded in KijiURI.

Reviewed by: milo