Voice notes for channels and direct messages

You can now send voice notes to channels and direct messages on both web and mobile! 
Try it out for yourself:
On web, select "Audio" from the plus menu and record your voice note! You can then pause, preview, send, or choose to delete.
On mobile, press and hold the microphone icon next to the message box. When the red microphone and timer appears on the left – you're recording! Keep holding and let go when you're finished your voice note. Swipe left to cancel or swipe up to lock the recording without needing to keep holding your finger down. When finished, press the send icon to share your voice note or press the x to delete it and start over.