Switch from SoftLayer::Service to SoftLayer::Client to add support for API timeout, bump softlayer_api required version to 2.2.0 or newer
Drop ::SoftLayer::SoftLayerAPIException Exception handling in sl_warden as its no longer used in softlayer_api 2.x branch
Drop the old style object masks for the new style mask string
Fix softlayer_api dep version, fix bug with transaction not being waited on and add transaction status to debug logging
Merge pull request #23 from ju2wheels/sl_api_2x_migrate

Migrate to softlayer_api 2.2.0+ in order to expose SL api timeout for end user
Pin 0.4.x to SoftLayer API v3.0 so we dont have to change again in the future
Bump version to 0.4.0