Merge branch 'nanograv:master' into py312

.gitattributes

@@ -1 +1,2 @@
 pint/extern/_version.py export-subst
+src/pint/extern/_version.py export-subst

AUTHORS.rst

@@ -41,7 +41,7 @@ Active developers are indicated by (*). Authors of the PINT paper are indicated
 * Sasha Levina 
 * Nikhil Mahajan 
 * Alex McEwen 
-* Patrick O'Neill 
+* Patrick O'Neill (*)
 * Tim Pennucci 
 * Camryn Phillips (#)
 * Matt Pitkin 

CHANGELOG-unreleased.md

@@ -12,6 +12,9 @@ the released changes.
 - `WAVE` parameters can be added to a `Wave` model with `add_wave_component()` in `wave.py` 
 - Moved design matrix normalization code from `pint.fitter` to the new `pint.utils.normalize_designmatrix()` function.
 - Made `Residuals` independent of `GLSFitter` (GLS chi2 is now computed using the new function `Residuals._calc_gls_chi2()`).
+- Upgraded versioneer for compatibility with Python 3.12
+- Creation of `Fitter` objects will fail if there are free unfittable parameters in the timing model.
+- Only fittable parameters will be listed as check boxes in the `plk` interface.
 ### Added
 - CHI2, CHI2R, TRES, DMRES now in postfit par files
 - Added `WaveX` model as a `DelayComponent` with Fourier amplitudes as fitted parameters
@@ -20,6 +23,9 @@ the released changes.
 - Added radial velocity methods for binary models
 - Support for wideband data in `pint.bayesian` (no correlated noise).
 - Added `DMWaveX` model (Fourier representation of DM noise)
+- Piecewise orbital model (`BinaryBTPiecewise`)
+- `TimingModel.fittable_params` property
+- Simulate correlated noise using `pint.simulation` (also available via the `zima` script)
 ### Fixed
 - Wave model `validate()` can correctly use PEPOCH to assign WAVEEPOCH parameter
 - Fixed RTD by specifying theme explicitly.
@@ -28,4 +34,5 @@ the released changes.
 - Fixed an incorrect docstring in `pbprime()` functions. 
 - Fix ICRS -> ECL conversion when parameter uncertainties are not set.
 - `get_TOAs` raises an exception upon finding mixed narrowband and wideband TOAs in a tim file. `TOAs.is_wideband` returns True only if *ALL* TOAs have the -pp_dm flag.
+- `TimingModel.designmatrix()` method will fail with an informative error message if there are free unfittable parameters in the timing model.
 ### Removed

src/pint/data/examples/B1855+09_NANOGrav_9yv1.gls.par

@@ -453,7 +453,7 @@ FD3  1.07526915D-04  1      2.50177766D-05
 SOLARN0               0.00
 EPHEM               DE421
 ECL                 IERS2003
-CLK                 TT(BIPM)
+CLK                 TT(BIPM2019)
 UNITS               TDB
 TIMEEPH             FB90
 #T2CMETHOD           TEMPO

src/pint/extern/__init__.py

@@ -1,2 +1,6 @@
 # __init__.py for pint/extern
 """External/third-party modules that are distributed with PINT."""
+
+from . import _version
+
+__version__ = _version.get_versions()["version"]