Multi-part tweetstorms are a staple of Twitter, for better or worse, and the social network wants them to be as easy to write as possible. After months of testing, its adding a thread feature that simplifies creating and posting a series of tweets. The composer now includes a plus button that lets you tack on additional tweets, with whatever youve written before still visible to help guide your train of thought. And when youre ready, you can post everything at once — no more …Read more