Revert deployment version. Resolves #867

config/Project-Shared.xcconfig

@@ -7,8 +7,8 @@ SWIFT_VERSION = 5.0
 
 TARGETED_DEVICE_FAMILY = 1,2,3,4
 
-TVOS_DEPLOYMENT_TARGET = 12.0
-IPHONEOS_DEPLOYMENT_TARGET = 12.0
+TVOS_DEPLOYMENT_TARGET = 9.0
+IPHONEOS_DEPLOYMENT_TARGET = 9.0
 MACOSX_DEPLOYMENT_TARGET = 10.12
 WATCHOS_DEPLOYMENT_TARGET = 2.0