CHANGELOG.md in cotcube-helpers-0.1.7.4 vs CHANGELOG.md in cotcube-helpers-0.1.8

@@ -1,4 +1,7 @@
+## 0.1.8 (April 18, 2021)
+  - datetime_ext: Date.cw provides a range of (Date..Date) representing the according calendar week
+
 ## 0.1.7.4 (March 13, 2021)
   - hotfix on 0.1.7.3
 
 ## 0.1.7.3 (March 13, 2021)
   - array_ext: pairwise and triplewise now support saving result in latter members []=