Release 2020-01-30 toolchain for macOS. (#374)

swiftlang/swift@7551278

Author: dan-zheng

Installation.md

@@ -64,7 +64,7 @@ To install Swift for TensorFlow, download one of the packages below and follow t
 
 | Download | Date |
 |----------|------|
-| [Xcode 11](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2020-01-14-a-osx.pkg) | January 14, 2020 |
+| [Xcode 11](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2020-01-30-a-osx.pkg) | January 30, 2020 |
 | [Ubuntu 18.04 (CPU Only)](https://storage.googleapis.com/swift-tensorflow-artifacts/nightlies/latest/swift-tensorflow-DEVELOPMENT-ubuntu18.04.tar.gz) | Nightly |
 | [Ubuntu 18.04 (CUDA 10.1)](https://storage.googleapis.com/swift-tensorflow-artifacts/nightlies/latest/swift-tensorflow-DEVELOPMENT-cuda10.1-cudnn7-ubuntu18.04.tar.gz) | Nightly |
 | [Ubuntu 18.04 (CUDA 10.0)](https://storage.googleapis.com/swift-tensorflow-artifacts/nightlies/latest/swift-tensorflow-DEVELOPMENT-cuda10.0-cudnn7-ubuntu18.04.tar.gz) | Nightly |
@@ -79,6 +79,7 @@ To install Swift for TensorFlow, download one of the packages below and follow t
 
 | Download |
 |----------|
+| [January 14, 2019](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2020-01-14-a-osx.pkg) |
 | [December 23, 2019](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2019-12-23-a-osx.pkg) |
 | [December 21, 2019](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2019-12-21-a-osx.pkg) |
 | [December 19, 2019](https://storage.googleapis.com/swift-tensorflow/mac/swift-tensorflow-DEVELOPMENT-2019-12-19-a-osx.pkg) |