Rename "roles" to "units". Put units in their own folders.

lib/units/device/support/channels.js

@@ -0,0 +1,14 @@
+var syrup = require('syrup')
+
+var logger = require('../../../util/logger')
+var ChannelManager = require('../../../wire/channelmanager')
+
+module.exports = syrup.serial()
+  .define(function() {
+    var log = logger.createLogger('device:support:channels')
+    var channels = new ChannelManager()
+    channels.on('timeout', function(channel) {
+      log.info('Channel "%s" timed out', channel)
+    })
+    return channels
+  })