v0.4.1 Release Notes
Added bundled YAML config templates under nf2/configs.
nf2-extrapolate and nf2-extrapolate-series now support installed config names such as nf2/cartesian/sharp_cea.yaml.
Removed duplicate examples/configs; nf2/configs is now the single source of truth.
Made optional error-file placeholders flexible: omitted *_err arguments are skipped cleanly.
Updated docs for SHARP CEA and HMI spherical single/series runs, including optional error-file arguments.
Bumped package, docs, and conda recipe version to 0.4.1.