Merge pull request #42 from avitex/master

Update futures-core to 0.3 and runtime to 0.3.0-alpha.8

Author: yoshuawuyts

Cargo.toml

@@ -13,9 +13,9 @@ Timeouts and intervals for futures.
 """
 
 [dependencies]
-futures-core-preview = "0.3.0-alpha.19"
+futures-core = "0.3.0"
 pin-utils = "0.1.0-alpha.4"
 
 [dev-dependencies]
-futures-preview = "0.3.0-alpha.19"
-runtime = "0.3.0-alpha.7"
+futures = "0.3.0"
+runtime = "0.3.0-alpha.8"