Catalyst 19.06rc2 把 TensorFlow 的依赖全去掉了，完全使用 PyTorch。新版本还没试用，不过把tf去掉倒是一个好消息。
link：https://catalyst-team.github.io/catalyst/index.html
Sergey的介绍：https://docs.google.com/presentation/d/1NQGWb53Kqm-f3hZ2JIoHjX-he3C39eOcSszZzp5o07U/edit#slide=id.p
Mr. Durov launched Telegram in late 2013 with his brother, Nikolai, just months before he was pushed out of VK, the Russian social-media platform he founded. Mr. Durov pitched his new app—funded with the proceeds from the VK sale—less as a business than as a way for people to send messages while avoiding government surveillance and censorship.
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Yes! Voice calls are currently available to users around the world.
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