CHANGELOG entry about py 3.8 req

CHANGELOG.md

@@ -1,3 +1,10 @@
+## v1.0.0 - 2023-??-?? - The One
+
+#### Stuff
+
+* Removal of a Python 3.7 specific import work-around now that it's no longer an
+  active/supported version. Also bumps required minimum version of Python 3.8
+
 ## v1.0.0.rc1 - 2023-07-20 - The last one before the 1s
 
 * Record and Zone validation now ensures there's no whitespace in names