ε and Γ_c with Fourier Bounce (#1290)

This PR updates the
- `Gamma_c` #1042 
- `effective ripple` #1003

objectives to use the numerical methods from #1119

CHANGELOG.md

@@ -1,11 +1,15 @@
 Changelog
 =========
 
-New Feature
+New Features
 
+- Bounce integral methods with ``desc.integrals.Bounce2D``.
+- Effective ripple ``desc.objectives.EffectiveRipple`` and Gamma_c ``desc.objectives.Gamma_c`` optimization objectives.
+- See GitHub pull requests [#1003](https://github.com/PlasmaControl/DESC/pull/1003), [#1042](https://github.com/PlasmaControl/DESC/pull/1042), [#1119](https://github.com/PlasmaControl/DESC/pull/1119), and [#1290](https://github.com/PlasmaControl/DESC/pull/1290) for more details.
+- Many new compute quantities for partial derivatives in different coordinate systems.
 - Adds a new profile class ``PowerProfile`` for raising profiles to a power.
 - Add ``desc.objectives.LinkingCurrentConsistency`` for ensuring that coils in a stage 2 or single stage optimization provide the required linking current for a given equilibrium.
-- Adds an option ``scaled_termination`` (defaults to True) to all of the desc optimizers to measure the norms for ``xtol`` and ``gtol`` in the scaled norm provided by ``x_scale`` (which defaults to using an adaptive scaling based on the Jacobian or Hessian). This should make things more robust when optimizing parameters with widely different magnitudes. The old behavior can be recovered by passing ``options={"scaled_termination": False}``.
+- Adds an option ``scaled_termination`` (defaults to True) to all the desc optimizers to measure the norms for ``xtol`` and ``gtol`` in the scaled norm provided by ``x_scale`` (which defaults to using an adaptive scaling based on the Jacobian or Hessian). This should make things more robust when optimizing parameters with widely different magnitudes. The old behavior can be recovered by passing ``options={"scaled_termination": False}``.
 - ``desc.objectives.Omnigenity`` is now vectorized and able to optimize multiple surfaces at the same time. Previously it was required to use a different objective for each surface.
 - Adds a new objective ``desc.objectives.MirrorRatio`` for targeting a particular mirror ratio on each flux surface, for either an ``Equilibrium`` or ``OmnigenousField``.
 - Adds the output quantities ``wb`` and ``wp`` to ``VMECIO.save``.
@@ -14,11 +18,14 @@ Bug Fixes
 
 - Small bug fix to use the correct normalization length ``a`` in the BallooningStability objective.
 - Fixed I/O bug when saving/loading ``_Profile`` classes that do not have a ``_params`` attribute.
+- Minor bugs described in [#1323](https://github.com/PlasmaControl/DESC/pull/1323).
+- Corrects basis vectors computations made on surface objects [#1175](https://github.com/PlasmaControl/DESC/pull/1175).
 
 v0.13.0
 -------
 
 New Features
+
 - Adds ``from_input_file`` method to ``Equilibrium`` class to generate an ``Equilibrium`` object with boundary, profiles, resolution and flux specified in a given DESC or VMEC input file
 - Adds function ``solve_regularized_surface_current`` to ``desc.magnetic_fields`` module that implements the REGCOIL algorithm (Landreman, (2017)) for surface current normal field optimization
     * Can specify the tuple ``current_helicity=(M_coil, N_coil)`` to determine if resulting contours correspond to helical topology (both ``(M_coil, N_coil)`` not equal to 0), modular (``N_coil`` equal to 0 and ``M_coil`` nonzero) or windowpane/saddle (``M_coil`` and ``N_coil`` both zero)

desc/batching.py

@@ -174,6 +174,15 @@ def _chunk_vmapped_function(
     return functools.partial(_eval_fun_in_chunks, vmapped_fun, chunk_size, argnums)
 
 
+def batch_map(fun, fun_input, batch_size):
+    """Compute vectorized ``fun`` in batches."""
+    return (
+        fun(fun_input)
+        if batch_size is None
+        else _eval_fun_in_chunks(fun, batch_size, (0,), fun_input)
+    )
+
+
 def _parse_in_axes(in_axes):
     if isinstance(in_axes, int):
         in_axes = (in_axes,)

desc/compute/__init__.py

@@ -31,6 +31,7 @@
     _bootstrap,
     _core,
     _curve,
+    _deprecated,
     _equil,
     _field,
     _geometry,