NEWS.md in nanoc-4.12.15 vs NEWS.md in nanoc-4.12.16

@@ -1,6 +1,12 @@
 # Nanoc news
 
+## 4.12.16 (2023-06-24)
+
+Fixes:
+
+- Made error handler print full error message if available (#1657)
+
 ## 4.12.15 (2023-02-06)
 
 Fixes:
 
 - Fixed an issue which made items always be considered outdated in sites with data sources with a custom `items_root` defined (#1640, #1644)