Release 8.0

New Features

Added the following parameters to the &model namelist group:
- constrain_derivs (constrains derivatives of structure coefficients to accord with stellar structure equations)
- interp_type (use piecewise linear interpolation, instead of cubic, in 'EVOL' models)
- use_nabla_rad (use nabla_rad to calculate the radiative luminosity, in 'EVOL'/'OSC' models)
- x_match (for setting the matching-point location in ANAPOLY_51 models)
Added a new 'ANAPOLY_5_1' option to the model_type parameter; this implements a mixed polytrope with a n_poly=5 core and an n_poly=1 envelope
Added/documented a number of new support tools:
- eval_love (evaluate tidal Love numbers)
- eval_tidal_coeff (evaluate tides-related coefficients)
- poly_to_fgong (convert a polytrope file to an FGONG file)
- poly_to_txt (convert a polytrope file to a text file)
Added the following output items for detail files:
- U_D

The 'ANAPOLY' option for the model_type parameter have been replaced by 'ANAPOLY_0', 'ANAPOLY_1', 'ANAPOLY_5' 'ANAPOLY_51' (see Analytic Polytrope Models)
The zeta output item now correctly accounts for the effects of internal density discontinuities
The omega_int output item now correctly accounts for the effects of non-vanishing surface pressure
The constrain_derivs parameter defaults to .TRUE., which may cause some small differences in non-adiabatic calculations, and/or calculations using non-default variables_set parameter choices such as 'JCD'
The build_poly tool now allows specification of the surface value of the polytropic dependent variable (see Input Files)
The 'NATURAL' option for the deriv_type parameter has been renamed to 'SPLINE'

Fixed errors in the caculation of the surface radius of 'ANAPOLY_1' and 'ANAPOLY_5' models
Fixed errors in reading the calculation grid from a file, which would lead to points being added outside the grid bounds
Fixed mistakes in the documentiation for composite polytropes
Fixed a bug in evaluating frequency-dependent eps_rho and eps_T coefficients

Deleted the following parameters from the &osc namelist group:
- zeta_scheme (there's no value in keeping possibly-incorrect methods for evaluating zeta)
Deleted the EXPERIMENTAL build environment variable
Deleted the following parameters from the &model namelist group:
- n_poly (now defined implicitly by the 'ANAPOLY_*' options)