Merge pull request #519 from khawkins/master

Adding upgrade note about background thread REST requests
Making sure that auth info is current after new authentication
Updating patch version
Merge pull request #534 from khawkins/delayed_rest_api

Making sure that auth info is current after new authentication
Updating ThirdPartyDependencies submodule
Merge pull request #538 from khawkins/openssl_update

Updating ThirdPartyDependencies submodule
Updating SDK version to 2.1.3