Default ClientName to Roleinstance ID for a web/worker role 

Default ClientName to Roleinstance ID for a web/worker role to help identify where a client connection is coming from, further helps to identify connectivity problems.

Fix overflow in parsing "-9223372036854775808"

Tweak name from `PeekPing` to `DequeueUnsentPing`, to better reflect what it is doing; fix the remaining count accordingly

Prevent Message from calling TryComplete on the same ResultBox (by gettin/nulling the ResultBox in a thread safe way).

Remove some scenarios where result-boxes are recycled in questionable ways; MULTI isn't fire and forget, so shouldn't be shared

Set default version to 3.0 for Azure

proposing timeout error with help link to help customers do an initial troubleshooting

Capture client system CPU percentage in timeout error messages

SE.Redis to surface error from serverendpoint as an innerexception 

reworded redis pub/sub doc to be more readable

Capture client system CPU percentage in timeout error messages when possible to help debug timeouts.

Remove indirection to mitigate a presumed deadlock. Fixes StackExchange/StackExchange.Redis#42.

StackExchange/StackExchange.Redis#42.

Resolves #337

Using RuntimeInformation.IsOSPlatform for core clr builds

proposing to change back SE.REdis synctimeout to be 1 second 

This reverts commit 48be9a9f.