Merge branch '8-remove-old-virtualenv' into 'master'

Bump version in manifest

Closes #8

See merge request !12

manifest.json

@@ -5,7 +5,7 @@
         "en": "Auto renewal for the Neutrinet vpn-certificates",
         "fr": "Renouvellement automatique des certificats vpn Neutrinet"
     },
-    "version": "0.3.0~ynh2",
+    "version": "0.3.0~ynh3",
     "license": "GPL-3+",
     "maintainer": {
         "name": "ilja",