Hacker News on 22 January 2015

• A better pull request
• Elevator Saga – An elevator programming game
• Riot – A React-like, 2.5K user interface library
• 16 Things
• Gotham Air: Manhattan to JFK in 6 minutes for $99
• Gitlet: Git implemented in JavaScript
• Let's Write an LLVM Specializer for Python
• Text-only video game shows how genre can be beautiful, innovative and complex
• Learn data science in your browser
• Improving Linux networking performance