Cronq

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- Use requirements.txt for cronq requirements. [Jose Diaz-Gonzalez]

Also fix support for haigha


- This is actually a feature, i guess. [Adam Cohen]

- Bump haigha requirement for wahtever reason. [Adam Cohen]

- Refactor this code to make it more obvious what’s going on. [Adam
Cohen]

- Use better queueconnection. [Adam Cohen]

-------------------

- Use synchronous callbacks to correctly log when a job is published.
[Jose Diaz-Gonzalez]

- Move cronq to do synchronous publishing. [Jose Diaz-Gonzalez]

- Pull down all keys when updating local copy. [Jose Diaz-Gonzalez]

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- Properly namespace log metadata. [Jose Diaz-Gonzalez]

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- Use unicode string for logging utf8 characters in global log. [Jose
Diaz-Gonzalez]

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- Add link to logs if CRONQ_LOG_URL_TEMPLATE env var is available. [Jose
Diaz-Gonzalez]

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- Split messages by newline when logging job messages. [Jose Diaz-
Gonzalez]