* Custom emoji
- In OStatus: `<link rel="emoji" name="coolcat" href="http://..." />`
- In ActivityPub: `{ type: "Emoji", name: ":coolcat:", href: "http://..." }`
- In REST API: Status object includes `emojis` array (`shortcode`, `url`)
- Domain blocks with reject media stop emojis
- Emoji file up to 50KB
- Web UI handles custom emojis
- Static pages render custom emojis as `<img />` tags
Side effects:
- Undo #4500 optimization, as I needed to modify it to restore
  shortcode handling in emojify()
- Formatter#plaintext should now make sure stripped out line-breaks
  and paragraphs are replaced with newlines
* Fix emoji at the start not being converted
		
	
			
		
			
				
	
	
		
			5 lines
		
	
	
	
		
			156 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			5 lines
		
	
	
	
		
			156 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
| Fabricator(:custom_emoji) do
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|   shortcode 'coolcat'
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|   domain    nil
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|   image     { File.open(Rails.root.join('spec', 'fixtures', 'files', 'emojo.png')) }
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| end
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