Lvmgort

🚀 New

* [13](https://github.com/sdss/lvmgort/issues/13) Adds a signal handler for `SIGINT` and `SIGTERM`. When `GortObserver` is running and an interrupt is received the signal handler will run the cleanup routine.
* Added `spectrograph_room` light to enclosure.

✨ Improved

* `SpectrographSet.reset` now accepts `full=True` which performs additional checks and opens/closes the shutter and hartmann doors as needed. `reset` with `full=True` is run automatically during the `cleanup` recipe.
* The GORT websocket now uses the CLU model for `lvmecp` instead of asking the PLC to report its status on each call to `WebsocketServer.enclosure_status()`.

✨ Improved

* [14](https://github.com/sdss/lvmgort/issues/14) Turn off dome lights as part of the `startup` and `cleanup` recipes.
* Use `lvmnps all-off`` to turn off all lamps faster.

🏷️ Changed

* Disable marking tiles as bad on error for now. This could cause confusion if an exposure failed and the tile was marked bad, but then the images were recovered using lockfiles.
* Skip the calibration sequence on startup by default.

🚀 New

* Added `selfie` position.

✨ Improved

* Added NPS devices for telescopes and MOCON.
* Added spectrograph exposure and enclosure timeouts.
* Support exposing only some spectrographs.
* Verify the number of files writtent to disk by the spectrographs and their MD5s.
* Mark exposure bad in post-readout if it fails.

🏷️ Changed

* Relaxed spec and sky telescope guiding tolerances to 3 arcsec.

🔧 Fixed

* Updated `NPS` to handle `lvmnps` 1.0.0 (including upgrade to `unclick` 0.1.0).

✨ Improved

* File logger logs to `logging.path` (defaults to `/data/logs/lvmgort/<SJD>.log`).

🏷️ Changed

* Disable guider corrections for `spec` telescope after acquisition. This prevents field rotation affecting the exposure at the cost of tracking error.
* Pass `-PA` to the guider due to different handiness for PA between the guider and the tiling database.

🔧 Fixed

* Fixed a bug in the recording of the standards acquisition and exposure times.

✨ Improved

* Pass `force` to `_prepare_telescopes()`.

🏷️ Changed

* Do not run cleanup after each iteration in `Gort.observe()`
* Set `stop_degs_before.sci` to 1.5.

🚀 New

* [11](https://github.com/sdss/lvmgort/pull/11) Support asynchronous readout during `GortObserved`-enabled observations and implement dithering:
* Remove calls to `lvmguider stop --now`. The new `stop` command always cancels the guider task.
* Added `pre-readout` hook for `Exposure`.
* Allow `GortObserver` to read out an exposure asynchronously.
* `Gort.observe_tile()` will by default read the last exposure asynchronously to allow for the next slew and acquisition to happen during readout.
* Added a context manager `GortObserver.register_overhead()` that measured the elapsed time in different parts of the slew and acquisition process and records the values to the database.
* The dither positions associated with a `Tile` are now a list of positions that the scheduler wants us to observe. `Gort.observe_tile()` will try to observe all dither positions without stopping the guider.
* Added `Gort.observe()` with a simple loop for observing tiles.
* Add dither information to `Tile` and support exposing multiple dither positions in the same observation.

✨ Improved

* Pass the observed sky and standard pks to the scheduler during registration.
* The K-mirror offset angle is now wrapped between -180 and 180 degrees. Hopefully this prevents some cases in which offsets angles very close to 360 degrees cause the K-mirror to fail because of a software limit.

🔧 Fixed

* Fixed deprecations in Pandas `fillna()` with `method='bfill'`.