We are proud to announce the release of yt 3.3.3! Version 3.3.3 is a regularly scheduled bugfix release including fixes for a number of issues reported since the release of yt 3.3.2. We urge all users to update to the latest version. If your python installation is managed via conda, update following: $ conda update -c conda-forge yt If your python installation is managed via pip, update following: $ pip install -U yt Finally, if you manage your yt installation by running out of a clone of the yt mercurial repository, update following: $ yt update We would like to thank the following people for their contributions to this release: Nathan Goldbaum Cameron Hummels Ben Keller Kacper Kowalik Jonah Miller Andrew Myers Hsi-Yu Schive Britton Smith Matthew Turk John Wise John ZuHone A summary of changes in this release, along with the number of the pull request implementing the change follows below: Additional docstrings for unstructured mesh data. See PR 2403 <https://bitbucket.org/yt_analysis/yt/pull-requests/2403/some-hopefully-illum...> . Speedup in clump finding. See PR 2426 <https://bitbucket.org/yt_analysis/yt/pull-requests/2426/opt-typedef-array-re...> . Speedup in tests. See PR 2427 <https://bitbucket.org/yt_analysis/yt/pull-requests/2427/use-slighlty-smaller...> . Bugfixes and docs for Tipsy data. PR 2430 <https://bitbucket.org/yt_analysis/yt/pull-requests/2430/tipsy-correct-auxili...> , PR 2431 <https://bitbucket.org/yt_analysis/yt/pull-requests/2431/clarify-the-use-of-c...> . Bugfix in Ramses time calculation. PR 2433 <https://bitbucket.org/yt_analysis/yt/pull-requests/2433/bugfix-explicitly-us...> . Bugfix in octree indexing. PR 2434 <https://bitbucket.org/yt_analysis/yt/pull-requests/2434/bugfix-explicitly-us...> . Fixing behavior of ProfilePlots and Profiles PR 2437 <https://bitbucket.org/yt_analysis/yt/pull-requests/2437/bugfix-fix-rich-disp...> , PR 2448 <https://bitbucket.org/yt_analysis/yt/pull-requests/2448/bugfix-more-careful-...> . Bugfix for EPSWritter handing dicts in PlotsWindow instances. PR 2440 <https://bitbucket.org/yt_analysis/yt/pull-requests/2440/updating-eps_writer-...> . Ensuring ion fields utilize dataset's metal-specific fields PR 2442 <https://bitbucket.org/yt_analysis/yt/pull-requests/2442/making-nuclei-densit...> . Assure no orphaned mercurial processes PR 2449 <https://bitbucket.org/yt_analysis/yt/pull-requests/2449/interact-with-mercur...> . Adding checks for bad values in AbsorptionSpectrum PR 2450 <https://bitbucket.org/yt_analysis/yt/pull-requests/2450/adding-check-for-neg...> . Bugfix in geographic handler PR 2452 <https://bitbucket.org/yt_analysis/yt/pull-requests/2452/fixing-x-y-axis-conf...> . Bringing gadget data more inline with other SPH datasets PR 2456 <https://bitbucket.org/yt_analysis/yt/pull-requests/2456/enabling-gadget-fron...> , PR 2436 <https://bitbucket.org/yt_analysis/yt/pull-requests/2436/bugfix-use-integer-d...> . Bugfix when OpenMP unavailable PR 2458 <https://bitbucket.org/yt_analysis/yt/pull-requests/2458>. Enable light_ray_solution saved to actual LightRay class PR 2460 <https://bitbucket.org/yt_analysis/yt/pull-requests/2460/save-light-ray-solut...> . Assure path uses dataset's own unit system. PR 2462 <https://bitbucket.org/yt_analysis/yt/pull-requests/2462/path-unit-should-use...> . Cameron Hummels, On behalf of the yt development team -- Cameron Hummels NSF Postdoctoral Fellow Department of Astronomy California Institute of Technology http://chummels.org