[ ] Nick translation

[ ] Attachment support
	[ ] Telegram -> NMDC
		[ ] Convert telegram files/images/videos to raw URLs for NMDC
		[ ] Bot API does allow downloading - but authenticated - need to re-host (either internally or upload to contented server)
		[ ] Can download up to 20MB files, raise contented limit to match
			[ ] Some photos and stickers come in multiple filesizes, from original down to thumbnail - take the largest size that fits in the Contented limit(?)
		[ ] Display warning in groupchat if message cannot be delivered to native users, or if it was delivered at low fidelity
	[ ] NMDC (Contented) -> Telegram
		[ ] Convert known URLs with image mime type to telegram images??
		[ ] Can upload 5MB photos 20MB other by forwarding an HTTP request
		[ ] Can upload 10MB photos 50MB other by directly uploading
		[ ] Contented /get/ URLs look OK anyway - /p/ links not so much - maybe add meta tags for previewing?
			- OpenGraph http://ogp.me/
			- https://medium.com/@richardoosterhof/how-to-optimize-your-site-for-rich-previews-527ed13a6d69
			- https://stackoverflow.com/a/30160564
			- Supports declaring multiple images on page: http://ogp.me/#array 
	[ ] Including private messages??? is that possible?

[ ] Editing Messages support

[ ] Drop NMDC connections for inactive users(?)
	[ ] No way to measure inactivity??

[ ] Publish