--- a/docs/HISTORY.txt	Fri Nov 09 12:04:04 2018 +0100
+++ b/docs/HISTORY.txt	Fri Nov 16 15:35:49 2018 +0100
@@ -1,6 +1,10 @@
 History
 =======
 
+0.1.12
+------
+ - check if port is already used before starting scheduler process to avoid zombies processes
+
 0.1.11
 ------
  - updated annotations adapters