message: Set ICE candidate pool size option
  So we can start candidate gathering in advance
diff: @@ -279,6 +279,10 @@ class _MatrixClientPeg implements IMatrixClientPeg {
  timelineSupport: true,
  forceTURN: !SettingsStore.getValue('webRtcAllowPeerToPeer'),
  fallbackICEServerAllowed: !!SettingsStore.getValue('fallbackICEServerAllowed'),
  + // Gather up to 20 ICE candidates when a call arrives: this should be more than we'd
  + // ever normally need, so effectively this should make all the gathering happen when
  + // the call arrives.
  + iceCandidatePoolSize: 20,
  verificationMethods: [
  verificationMethods.SAS,
  SHOW_QR_CODE_METHOD,
  