Bump python-velbustcp 1.2.4

Remove section on certificates from README

README.md

@@ -35,7 +35,7 @@ snap set velbus-tcp serial.port=/dev/ttyAMA0
 
 The application can broadcast the system time on the bus, it will do so at startup and after every hour transition.
 
-This is option disabled by default. To enable, use
+This is option disabled by default. You can enable/disable NTP by using
 
 `snap set velbus-tcp velbus.ntp=true|false`
 
@@ -65,15 +65,6 @@ You can enable SSL to encrypt the connection between you and the application, en
 
 `snap set velbus-tcp tcp.ssl=true|false`
 
-By default, a certificate is generated during installation. If you want to supply your own certificate, use
-
-```yaml
-snap set velbus-tcp tcp.cert=PATH_TO_YOUR_CERTIFICATE
-snap set velbus-tcp tcp.pk=PATH_TO_YOUR_PRIVATE_KEY
-```
-
-If you want to revert to the generated certificate/private key, you may set tcp.cert and tcp.pk empty.
-
 ## Multiple bind points
 
 You can set up multiple bind points by using comma-seperated values. You'll need to supply all values for a second bind point, for example;

snap/snapcraft.yaml

@@ -1,5 +1,5 @@
 name: velbus-tcp
-version: 1.2.3
+version: 1.2.4
 base: core18
 summary: Python application that bridges a Velbus installation with TCP
 description: |
@@ -18,7 +18,7 @@ parts:
   src:
     plugin: dump
     source: https://github.com/velbus/python-velbustcp.git
-    source-tag: 1.2.3
+    source-tag: 1.2.4
     stage-packages: [openssl]
 
   extra: