drone branch restrict master

.drone.yml

@@ -8,6 +8,7 @@ pipeline:
     image: therecipe/qt:linux
     when: 
       repo: cwtch.im/ui
+      branch: master
       event: [ push, pull_request ]
     environment:
       - QT_DIR=/opt/Qt
@@ -30,6 +31,7 @@ pipeline:
     image: therecipe/qt:android
     when: 
       repo: cwtch.im/ui
+      branch: master
       event: push
     environment:
       - QT_DIR=/opt/Qt
@@ -54,6 +56,7 @@ pipeline:
     image: therecipe/qt:windows_64_shared
     when: 
       repo: cwtch.im/ui
+      branch: master
       event: push
     environment:
       - QT_DIR=/opt/Qt
@@ -81,6 +84,7 @@ pipeline:
     secrets: [buildfiles_key]
     when: 
       repo: cwtch.im/ui
+      branch: master
       event: push
       status: [ success ]
     commands:
@@ -100,10 +104,14 @@ pipeline:
       skip_verify: true
       from: drone@openprivacy.ca
       when:
+        repo: cwtch.im/ui
+        branch: master
         status: [ failure ]
   notify-gogs:
     image: openpriv/drone-gogs
     when:
+      repo: cwtch.im/ui
+      branch: master
       event: pull_request
       status: [ success, changed, failure ]
     secrets: [gogs_account_token]