Revert "2018.1.0b6" This reverts commit cfa4eb1562f3417cf89a5d07f08854b6eeec8fcd. Revert "Lets try b5" This reverts commit 5ca99480a4fdab84635d1d1f627f37aa609cccfa. Revert "Lets try building with b4" This reverts commit f94454ae78b1d643707ed3ae88feb6cbb0e5c276.