v0.23.0

RRTMGP v0.23.0

Diff since v0.22.3

v0.23.0

• Multi-angle longwave quadrature now works. The spectral non-scattering
  longwave solver integrates the Schwarzschild equation along 1-4
  Gauss-Jacobi-5 angles, selected with the n_gauss_angles keyword of
  NoScatLWRTE or RRTMGPSolver (the tables existed, but every kernel read
  only the first angle). The default remains the single-angle diffusivity
  approximation, bit for bit. One angle reproduces the hemispheric
  transmittance 2E₃(τ) to about 2.5%, four angles to better than 0.1%; run
  time grows in proportion to the number of angles. Gray radiation and the
  two-stream longwave solver reject n_gauss_angles > 1 rather than ignore
  it. A prescribed incident longwave flux is now converted to intensity as
  F/π (unchanged for one angle), so the angle-weighted fluxes sum back to
  F. Checked by the new test/angular_discretization.jl.
• Breaking (renames, with deprecations): clear_lw_flux →
  clear_lw_flux_net and clear_sw_flux → clear_sw_flux_net (matching
  lw_flux_net/sw_flux_net); toa_flux → toa_sw_flux_dn,
  top_of_atmosphere_lw_flux_dn → toa_lw_flux_dn, and
  top_of_atmosphere_diffuse_sw_flux_dn → toa_diffuse_sw_flux_dn (one
  toa_ prefix for the incident-flux getters; the SwBCs field and the
  solve/solve_gray keyword toa_flux are unchanged). The old names
  forward with a deprecation warning until the next breaking release.
• Breaking: RadiationOutput fields now match the getters:
  lw_flux_up/lw_flux_dn/lw_flux_net,
  sw_flux_up/sw_flux_dn/sw_direct_flux_dn/sw_flux_net, and net_flux
  (previously lw_up/lw_dn/lw_net, sw_up/sw_dn/sw_direct_dn/
  sw_net, and net). heating_rate and solver are unchanged.
• The public API is delimited. RRTMGP.PUBLIC_NAMES lists it,
  test/public_api.jl locks it (every listed name defined and documented,
  nothing undeclared on the module surface), and on Julia 1.11 and later the
  list is declared with public. Undocumented helpers became internal
  (get_artifact_path, aerosol_names_docs, gas_names_sw_docs,
  update_views, and the AEROSOL_IDX constant are _-prefixed); the
  interpolation extension points (interp!, extrap!, requires_z,
  uniform_z_p, best_fit_p) gained docstrings and stay public.
• validate_inputs reports the incident-solar-flux violation as
  toa_sw_flux_dn rather than the storage field name.
• ClimaAtmos downstream testing moved from GitHub Actions, whose job timed
  out, to Buildkite, which triggers the climaatmos-downstream pipeline
  against the RRTMGP commit under test. ClimaCoupler stays on GitHub Actions.

Merged pull requests:

• Cleanup toward v1: limit public API, unify variable names, enable multi-angle LW (#619) (@tapios)
• v0.23 (#620) (@tapios)