Add new LINQ operators
Add new LINQ operators

AndrewHoh/azure-documentdb-net,SonOfSam/azure-documentdb-net,vivekdhami/azure-documentdb-net,sedwardstx/azure-documentdb-net,AndrewHoh/azure-documentdb-net,samsakni/azure-documentdb-net,activitymaster/azure-documentdb-net,sedwardstx/azure-documentdb-net,SonOfSam/azure-documentdb-net,activitymaster/azure-documentdb-net