Sdss-hartmannactor

🚀 New

* Configuration option to define what cameras to use for adjusting focus. This can also be passed as comma-separated values to the keyword `cameras` (e.g., `hartmann collimate cameras=b1,b1,b2`. If only one camera is available, only the collimator correction is calculated and applied (since we are optimising focus for a single camera it's not necessary to adjust both collimator and blue ring).

✨ Improved

* Output spectrographs in use on `status`.

* 🧹 Cleanup

* Move reading of spectrographs to use to `HartmannActor` and define an attribute there.

🚀 New

* New configuration option to set the available spectrographs.

🚀 New

* Ticket [2867](https://trac.sdss.org/ticket/2867): implement bypass keyword to skip certain checks. For now only `bypass="ffs"` is accepted, which prevents a collimation to fail if the FFS keywords in the image header are badly formatted.

🧹 Cleanup

* `Bumpversion` version control.
* New version numbering scheme.
* Applied `isort`, `yapf`, and `unify` to all files.


v1_5 (2017-06-11)

✨ Improved

* Ticket [2701](https://trac.sdss.org/ticket/2701): SOP Actions when hartmann fails on "gotoField". Adds a new keyword `minBlueCorrection` to `collimate` that will output only the minimum blue ring correction needed to get in focus tolerance. This is a necessary step for the changes in sopActor to address ticket #2701.

🔧 Fixed

* Ticket [2705](https://trac.sdss.org/ticket/2705): SOP gotoField fails when no collimator move is required.