extend hoover time format to support parsing of 'seconds' and 'milliseconds' timestamps (datasift/gnip)
add more debug logging for hoover jobs controllable by job params. allow tracing stderr.
add static method to register new builders
Javadoc AbstractStreamFileDataSource#format.

A previous commit set a default value for AbstractStreamFileDataSource#format
to "channel" type. This commit updates the Javadoc to reflect the change.
Merge pull request #49 from stewartoallen/at-pull-add-builder-register

add static method to register new builders
remove commented line
Merge pull request #48 from stewartoallen/at-pull-hoover-extend

extend hoover time format to support parsing of 'seconds' and 'milliseconds' timestamps (datasift/gnip)
fix incorrect callback param name
clean up return value on two rpc calls
minor - remove unnecessary type information
Merge pull request #51 from stewartoallen/at-pull-rpc-fixups

fix incorrect callback param name
mqworkers use list bundles in their output sinks
Adding bundle canaries to Hydra jobs.

These are a new type of alerts that can be added to map jobs.
The bundle canary alerts specify a query path, query ops, query
remote ops, and a bundle filter. The query must return one or
more rows. The first row is interpreted as a header row. Each
subsequent row is interpreted as a bundle. The bundle filter
is applied to each row and the alert is fired if any of the rows
yield a value of false.

Squashed commit of the following:

commit af21e08587648c4dcbb26b80882c9e9ec001aaa4
Author: Michael Spiegel <spiegel@addthis.com>
Date:   Tue Mar 25 16:14:12 2014 -0400

    Removed unused imports.

commit 4f1e9859f1974fd82623ad12d172db647e573104
Author: Michael Spiegel <spiegel@addthis.com>
Date:   Tue Mar 25 16:05:22 2014 -0400

    Refactoring of job alert error handling.

commit 38620145543512e54bbd21bc4fdf09a52e428234
Author: Michael Spiegel <spiegel@addthis.com>
Date:   Tue Mar 25 15:48:52 2014 -0400

    Improved error handling when specifying alerts.

commit 7ca80a665601a1a7878d2f5dd84ce3cc97b294fd
Author: Michael Spiegel <spiegel@addthis.com>
Date:   Tue Mar 25 13:36:02 2014 -0400

    Initial commit of canary query filters.
Disable migration for map jobs to improve query performance
Merge branch 'master' of github.com:mspiegel/hydra