smftools.analysis.config.hmm_histogram#
Per-feature-type binning, rolling-mean, and peak-calling config for HMM feature histograms.
HISTOGRAM_CONFIGS[feature_layer_name][hist_type] returns a dict or None.
hist_type is one of "count", "size", or "neighbor_distance".
Each dict may contain bin_size_bp, rolling_window_bp, peak_kwargs,
rolling_color, peak_color, and optionally gaussian_fit.