The "References" column is now coloured as "Reference"

CHANGELOG.md

@@ -34,6 +34,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Not all errors during makefile generation were catched (got a stack trace).
 - Output dirs created when generating a makefile for a compress target.
 - Problems with some SnapEDA libs (extra space in lib termination tag #57)
+- The "References" (plural) column is now coloured as "Reference" (singular)
 
 ## [0.10.1] - 2021-02-22
 ### Added

kibot/bom/columnlist.py

@@ -83,6 +83,7 @@ class ColumnList:
     # These columns are 'immutable'
     COLUMNS_PROTECTED_L = {
         COL_REFERENCE_L[:-1],  # The column is References and the field Reference
+        COL_REFERENCE_L,  # The column is References and the field Reference
         COL_GRP_QUANTITY_L,
         COL_VALUE_L,
         COL_PART_L,