**yt_astro_analysis version 1.1 is released!**
yt_astro_analysis is an extension of yt for astrophysical analysis. This is the first stable release of yt_astro_analysis to be compatible with yt version 4.0 and later.
New Features
* The HaloCatalog has been significantly refactored (https://github.com/yt-project/yt_astro_analysis/pull/58, https://github.com/yt-project/yt_astro_analysis/pull/62) with the following additional improvements:
* the interface to the Rockstar halo finder is now compatible with the latest version of Rockstar Galaxies https://github.com/yt-project/yt_astro_analysis/pull/55
* all halo finders now support being run with time-series of datasets
* halo particle ids now savable with FoF and HOP halo finders https://github.com/yt-project/yt_astro_analysis/pull/52
* looping over halos is done with io chunks instead of ds.all_data for a significant speedup and reduction in memory
* Allow more flexibility for specifying rockstar particle mass https://github.com/yt-project/yt_astro_analysis/pull/84
* Add restart option for rockstar https://github.com/yt-project/yt_astro_analysis/pull/82
* Adding an outer_radius parameter to the iterative COM callback https://github.com/yt-project/yt_astro_analysis/pull/34
* Remove the sunyaev_zeldovich analysis module. This is now [ytsz](https://github.com/jzuhone/ytsz). https://github.com/yt-project/yt_astro_analysis/pull/79
* Drop support for python 3.6 https://github.com/yt-project/yt_astro_analysis/pull/100, https://github.com/yt-project/yt_astro_analysis/pull/101
Minor Enhancements and Bugfixes
* significant project management and ci improvements https://github.com/yt-project/yt_astro_analysis/pull/89, https://github.com/yt-project/yt_astro_analysis/pull/90, https://github.com/yt-project/yt_astro_analysis/pull/91, https://github.com/yt-project/yt_astro_analysis/pull/92, https://github.com/yt-project/yt_astro_analysis/pull/96, https://github.com/yt-project/yt_astro_analysis/pull/95, https://github.com/yt-project/yt_astro_analysis/pull/97, https://github.com/yt-project/yt_astro_analysis/pull/108, https://github.com/yt-project/yt_astro_analysis/pull/109
* Add annotate_halos function https://github.com/yt-project/yt_astro_analysis/pull/98
* only access particle_type field in rockstar if it exists and is needed https://github.com/yt-project/yt_astro_analysis/pull/111
* fix light cone projections with weight fields https://github.com/yt-project/yt_astro_analysis/pull/37
* Fix HaloCatalog progress bar https://github.com/yt-project/yt_astro_analysis/pull/40
* clarify rockstar error message about using the wrong number of MPI processes https://github.com/yt-project/yt_astro_analysis/pull/42, https://github.com/yt-project/yt_astro_analysis/pull/113
* check derived_field_list for base fields https://github.com/yt-project/yt_astro_analysis/pull/43
* allow cosmology splice from a single dataset https://github.com/yt-project/yt_astro_analysis/pull/49
* Fix iterator https://github.com/yt-project/yt_astro_analysis/pull/68
* Support new config file format https://github.com/yt-project/yt_astro_analysis/pull/65
* Enable circleci testing https://github.com/yt-project/yt_astro_analysis/pull/44
* Add max_box_fraction to plan_cosmology_splice https://github.com/yt-project/yt_astro_analysis/pull/76
* Fix HaloCatalog output_dir https://github.com/yt-project/yt_astro_analysis/pull/81
* remove deprecated dm_only keyword from halo finder https://github.com/yt-project/yt_astro_analysis/pull/57
* update amr_grid.inp https://github.com/yt-project/yt_astro_analysis/pull/77
New Contributors
* Corentin Cadiou (cphyc)
* Nathan Goldbaum (ngoldbaum)
* Meng Yuan Ho (willsonho2000)
* Cameron Hummels (chummels)
* Clément Robert (neutrinoceros)
**Full Changelog**: https://github.com/yt-project/yt_astro_analysis/compare/yt_astro_analysis-1.0.0...yt_astro_analysis-1.1.0