CHANGELOG.md in hash_math-1.2.0.pre.alpha vs CHANGELOG.md in hash_math-1.2.0

@@ -1,5 +1,5 @@
-# 1.2.0 (TBD)
+# 1.2.0 (August 19th, 2020)
 
 Additions:
 
 * HashMath::Mapper