Support new reaction emoji

[smashwilson]

Prerequisites

• Have you tried to reproduce the problem in Safe Mode?
• Have you followed all applicable steps in the debugging guide?
• Have you checked the FAQs on the message board for common solutions?
• Have you checked that your issue isn't already filed?

Description

GitHub.com shipped additional reaction emoji. We should support rendering these in our pull request detail item.

Steps to Reproduce

1. Open a pull request detail open on a pull request or issue that includes a 🚀 or 👀 reaction emoji.

Expected behavior:

The 🚀 and 👀 emoji should appear like the others do.

Actual behavior:

Reproduces how often:

100%

Versions

atom/github 0.24.0

Additional Information

Here's the source code we need to add additional members to:

github/lib/views/emoji-reactions-view.js

Lines 5 to 12 in b509125

	const reactionTypeToEmoji = {
	THUMBS_UP: '👍',
	THUMBS_DOWN: '👎',
	LAUGH: '😆',
	HOORAY: '🎉',
	CONFUSED: '😕',
	HEART: '❤️',
	};

While we're in there, we should ensure we gracefully skip unrecognized emoji.