Feature/pairwise peptide correlations heatmap

HISTORY.md

@@ -12,6 +12,10 @@ and this project adheres to
 
 **Plotting** (`pr.pl`)
 
+- `pairwise_peptide_correlations_heatmap()`: per-protein clustered
+  peptide-correlation heatmap with proteoform (`cluster_id` /
+  `proteoform_id`) annotation strips, symmetric row/column linkage
+  (`method`, `linkage`, `cluster`) and multiple `margin_color` columns
 - `peptide_intensities()`, `proteoform_intensities()`: new `facet_by`
   parameter splitting the samples (`.obs`) across a grid of subplots
 
@@ -50,6 +54,13 @@ and this project adheres to
 
 ### Changed
 
+**Internal**
+
+- Moved and renamed the private matrix helper
+  `utils.copf.reconstruct_corrs_df_symmetric_from_long_df` to
+  `utils._matrix_wrangling.reconstruct_symmetric_matrix_from_long`
+  (generic labels/values, `raise` instead of `assert` on conflicts)
+
 **Preprocessing** (`pr.pp`)
 
 - `normalize_median()`:

proteopy/pl/__init__.py

@@ -23,7 +23,10 @@
     hclustv_profiles_heatmap,
 )
 
-from .copf import proteoform_scores
+from .copf import (
+    proteoform_scores,
+    pairwise_peptide_correlations_heatmap,
+)
 from .stat_tests import (
     volcano,
     differential_abundance_box,