Release 1.4.3

Hotfix for hotfix O:-)

- "Write stall fix" was incomplete and EC write stalls could
  continue even on 1.4.2. Now they're finally fixed O:-)
- Make monitor ignore statistics of stopped OSDs. Previously if you stopped all
  OSDs the last total I/O numbers would remain the same indefinitely

mon/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vitastor-mon",
-  "version": "1.4.2",
+  "version": "1.4.3",
   "description": "Vitastor SDS monitor service",
   "main": "mon-main.js",
   "scripts": {