Rubin-sim

This is a breaking change to the API, with a refactor of the codebase to better conform to python naming standards.

In general, names that previously looked like "runAll" became "run_all", "readSED_flambda" is now "read_sed_flambda", "mafContrib" is "maf_contrib", etc. Locations of methods and classes should be the same, and functionality should be preserved -- this is primarily a deep naming change.

Other notable changes from v.0.12.0 include:
* rubin_sim data is now downloaded from USDF
* filter names in the scheduler can now be 40 characters
* there is a satellite streak module (rubin_sim.satellite_constellations) which can be used to simulate satellite impacts and scheduler responses
* the site_models module can now use a variety of cloud models, enabling testing of weather robustness
* there has been considerably more verification of the DESC SNIa metric, resulting in consistent results between MAF and DESC
* tweaks and updates to several other metrics
* ongoing work in the scheduler to enable more use at AuxTel and better interaction with the on-the-fly monitoring tool `schedview`

rubin_sim is maintained by yoachim, rhiannonlynne, ehneilsen, and tribeiro
rubin_sim is also an open-software project and we are grateful for the many contributions from our (primarily astronomical) community.

This is a last release pre v1.0.0 which will implement breaking changes in the API, due to refactoring the names to be more PEP8 compliant.

The first GitHub release for rubin_sim. This is a v0 version, and future versions will break the APIs defined here due (at a minimum) to updating the naming patterns to better match python standards.

Rubin_sim is a software package for both simulating Rubin Observatory performance and developing the operations scheduler (which also requires simulating conditions and performance of the observatory and site).

Rubin_sim has been developed as part of the Legacy Survey of Space and Time (LSST) project. Early development was carried out in the following (now legacy) packages:
* [sims_maf](https://github.com/lsst-sims/legacy_sims_maf),
* [sims_mafContrib](https://github.com/lsst-nonproject/sims_maf_contrib),
* [sims_photUtils](https://github.com/lsst-sims/legacy_sims_photUtils),
* [sims_coordUtils](https://github.com/lsst-sims/legacy_sims_coordUtils),
* [sims_utils](https://github.com/lsst-sims/legacy_sims_utils),
* [sims_movingObjects](https://github.com/lsst-sims/legacy_sims_movingObjects),
* [sims_downtimeModel](https://github.com/lsst-sims/legacy_sims_downtimeModel),
* [sims_cloudModel](https://github.com/lsst-sims/legacy_sims_cloudModel),
* [sims_seeingModel](https://github.com/lsst-sims/legacy_sims_seeingModel),
* [sims_skybrightness](https://github.com/lsst-sims/legacy_sims_skybrightness),
* [sims_skybrightness_pre](https://github.com/lsst-sims/legacy_sims_skybrightness_pre),
* [sims_maps](https://github.com/lsst-sims/legacy_sims_maps),
* [sims_dustmaps](https://github.com/lsst-sims/legacy_sims_dustmaps),
* [sims_almanac](https://github.com/lsst-sims/legacy_sims_almanac),
* [sims_operations](https://github.com/lsst-sims/legacy_sims_operations) - an original version of the scheduler
* [sims_featureScheduler](https://github.com/lsst-sims/legacy_sims_featureScheduler) - the future operations version of the scheduler

The earliest development history is preserved in the git logs of these packages, which were merged and refactored to create rubin_sim in 2021 (thus losing the commit history). When repackaged into rubin_sim, previous dependencies on the LSST data management build system were also shed, allowing simpler installation and usage.

rubin_sim is maintained by yoachim, rhiannonlynne, ehneilsen, and tribeiro
rubin_sim is also an open-software project and we are grateful for the many contributions from our (primarily astronomical) community.