Hotfix for Actuator Agent and Historian

This release addresses bug #223 in the Actuator where agents could issue control actions despite not having a reservation. This has been fixed and now agent must have scheduled a reservation prior to issuing commands.

This release also addresses issue #234 caused where changing the case of topic names in drivers causes a conflict in the historian. For instance, if the driver config for "mytopic" becomes "MyTopic" and the historian would error when encountering this "duplicate filename".

The fix for issue #226 ensures that the required library pytz is installed even when numpy is not.