GA release v1.0.47

Changes since 1.0.46: v1.0.46...v1.0.47

• Fix to copyRowsFunc hanging issue. Thank you @wfxiang08 #611
• Support for GCP (Google Cloud Platform) #634
• Populate the hooks environment with dry run status. Thank you @jacobbednarz #641
• Integration test updates
• Minor documentation updates

Checksums:

$ sha256sum *
1e2659498d8f2b66cd911e52c8282f03fd2de08eb86d6d77aad0c7ec3e6ff9e0  gh-ost-1.0.47-1.x86_64.rpm
1b00a14d5b358efd210d5371d63d5c84f3ce35717fbb2c15a24b7248b2dede95  gh-ost-binary-linux-20181016015113.tar.gz
396964f58cb6a72818437cd1a2cf129523b339b6000dd6443f9399841e0d35d9  gh-ost-binary-osx-20181016015113.tar.gz
8e98c38d9d4129929a95850aecc50f010443626e5ff0ba7ef85c90f24444e199  gh-ost_1.0.47_amd64.deb