DS-1.0.2

Performance improvements (#223)

* Refactor code writing twin tags for better performance
* Refactor device properties code for better performance
* Refactor simulation runner for better performance
* Improve connections performance
* Reduce time to start simulation, by creating devices using the same conn string and fetching device from registry only if the authentication fails.
* Limit the number of pending threads attempting to deliver telemetry
* Change all stock device models to use AMQP
* Move SDK timeout setting and other hard coded magic numbers to config file
* Use default timeout value from SDK instead of hardcoding it
* Improve documentation in the configuration file
* Upgrade IoT SDK
* Improve logging in device client
* Reduce noise in the "Info" log level
* When building, remove "deleted files" left over from previous builds
* Improve error detection when creating devices with batch operations
* Recreate device client when the internal AMQP client is disposed (lib bug workaround)
* VS code config update
* Remove simulation version, not used anywhere
* Catch and log when a device model doesn't exist
* Log missing config settings
* Make sure the simulation object is not lost in case of errors while checking for simulation changes
* Limit async tests duration
* Remove IoT hub registry workaround
* Fix boolean conf values parsing
* Remove "en-us" from links in the comments
* Fix invalid parsing of environment variables