v0.1.97 Release of PowerShell worker for Azure Functions

The major changes for this release are:

• Support the dependency download to happen on a background thread spawned by the FunctionLoad request and if the dependency download is still in progress and the function execution is invoked from the azure portal then the user will get the message on the azure portal log window that the dependency download is in progress and the function execution will continue when the download is done
• Support json as a dataType for queueTrigger
• Adding InvocationId', 'FunctionDirectory' and 'FunctionName' to HttpTriggerWithMetadata
• Improvement in PowerShell unction execution throughput improvement depending upon the PowerShell
  thread pool