Forward :change events to Layout#update in runner

lib/uh/wm/runner.rb

@@ -119,6 +119,10 @@ module Uh
           log "Unmanaging client #{client}"
           layout.remove client
         end
+        @events.on :change do |client|
+          log "Updating client #{client}"
+          layout.update client
+        end
       end
 
       def register_keybinds_hooks

spec/uh/wm/runner_spec.rb

@@ -5,6 +5,7 @@ SomeLayout = Class.new do
   define_method(:suggest_geo) { build_geo 0, 0, 42, 42 }
   define_method(:<<)          { |*_| }
   define_method(:remove)      { |*_| }
+  define_method(:update)      { |*_| }
 end
 
 module Uh
@@ -98,6 +99,12 @@ module Uh
             expect(env.layout).to receive(:remove).with :client
             runner.events.emit :unmanage, args: :client
           end
+
+          it 'registers for :change event' do
+            runner.register_event_hooks
+            expect(env.layout).to receive(:update).with :client
+            runner.events.emit :change, args: :client
+          end
         end
 
         context 'keys hooks' do