Release Version 2.1

The main target of v2.1 is major refactoring for the new development of ExoJAX3 (#606 #607 #608) and to implement the differentiable CKD (#484).
This capability will be used to computes magnitude and/or low/mid res spectrum to calibrate high-res spectra.

New Features

• Correlated-k distribution (CKD; beta-version), #484 #610 #614

  • tutorial for emission
  • tutorial for transmission
  • what is CKD?

• extra database for ExoMolHR #595 #600 , see this tutorial

• FeH line list by Hargreaves et al. (2010), #603 by @YuiKasagi

• checkpoint (memory release) for transmission reverse-mode diff #604 by @sh-tada

See #597 as direction toward ExoJAX3

Refactoring

Seprates database, opacity, rt, postproc from spec, and a script for fixing

#606 #607 #611

The main change in this update is the redistribution of modules previously located in exojax.spec into four function-specific subpackages: exojax.database (db), exojax.opacity (opa), exojax.rt (art), and exojax.postproc.
To assist with this transition, we have included a script that automatically updates your import statements from exojax.spec to their appropriate new locations.
The script is located at exojax/scripts/fix_v2_1.py. You will need to install libcst to run it.

pip install libcst

Please make sure to back up your original files before using the script.
Usage instructions are as follows:

python -m fix_v2_1 your_project/

• OpaPremodit, OpaDirect, OpaModit can be called such as

from exojax.opacity import OpaPremodit

Bug Fixes

• Reflect updates to astropy (unit "Angstrom") by @YuiKasagi #615

Removed methods

• removed dtau_mmwl
• merged nu2wav and wav2nu from unitconvert to utils.grids