Update changelog for 8.0.0

Author: philpep

CHANGELOG.rst

@@ -2,7 +2,7 @@
 Changelog
 =========
 
-7.1.0
+8.0.0
 =====
 
 * [NEW] Add Group.members attribute
@@ -12,6 +12,7 @@ Changelog
 * [FIX] Fix possible error in Interface.default()
 * [FIX] Fix busybox detection in Process module
 * [FIX] Fix possible KeyError in SysInfo module
+* [BREAKING] Drop support for python 3.7
 
 7.0.1
 =====