update change log

ChangeLog.txt

@@ -1,3 +1,23 @@
+1.1.0 (2017.8.22)
+  - New feature to poll previously started long running operations
+  - Support JSON based auth file
+  - Support closing the HTTP client gracefully
+  - Add Java version to User-Agent header
+  - Fix an authentication error for some Azure services like Azure datalake
+
+1.0.4 (2017.6.30)
+  - Supports proxy on Azure credentials
+
+1.0.3 (2017.6.8)
+  - Swallow possible exceptions thrown from MAC address retrieval
+  - Remove unnecessary thread pool that could cause thread leak
+
+1.0.1 (2017.4.19)
+  - Ignore cases when deserializing headers
+  - Supports authentication using service principals with certificate
+  - Allow setting default timeout for long running operations
+  - Adds MAC address hash and OS info into User-Agent header
+
 1.0.0 (2017.2.17)
   - Add AzureCliCredentials
   - Fix RestClient.newBuilder