Merge 1.21(.1) into 1.21.4

* 1.21(.1):
  Update CHANGELOG.md (1.4.2)
  Write to changelog history and reset changelog file

Author: pnk2u

CHANGELOG.md

@@ -1 +1,4 @@
-<!--publish=false-->
+<!--publish=false-->
+### 1.4.2:
+- `1.21.4(-8)`: Remove compatibility with Nemo's Copper as that mod has been discontinued by its author
+- `1.21.9(10)`: Add compatibility with More Tool Variants `1.2.0` (Copper Tools - Axes in particular)