Mqtt5 enums (#235)

Author: sbSteveK

Package.swift

@@ -192,7 +192,7 @@ let awsCEventStreamExcludes = [
 
 let awsCMqttExcludes = [
     "bin",
-    "CODE_OF_CONDUCT.md",
+    "CODE_OF_CONDUCT.md"
 ] + excludesFromAll
 
 packageTargets.append(contentsOf: [

README.md

@@ -1,5 +1,5 @@
 # AwsCommonRuntimeKit
-The AWS CRT for Swift is currently in developer preview and is intended strictly for feedback purposes only. 
+The AWS CRT for Swift is currently in developer preview and is intended strictly for feedback purposes only.
 Do not use this for production workloads.
 
 ## Building
@@ -29,4 +29,4 @@ Required Reading:
 Useful Videos:
 - [Safely manage pointers in Swift](https://developer.apple.com/videos/play/wwdc2020/10167/)
 - [Unsafe Swift](https://developer.apple.com/videos/play/wwdc2020/10648)
-- [Swift and C Interoperability](https://youtu.be/0kim9mxBOA8)
+- [Swift and C Interoperability](https://youtu.be/0kim9mxBOA8)

Source/AwsCommonRuntimeKit/io/retryer/ExponentialBackoffJitterMode.swift

@@ -3,12 +3,22 @@
 
 import AwsCIo
 
+/// Controls how the reconnect delay is modified in order to smooth out the distribution of reconnection attempt
+/// timepoints for a large set of reconnecting clients.
+/// See `Exponential Backoff and Jitter <https:///aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/>`_
 public enum ExponentialBackoffJitterMode {
-    /// Uses AWS_EXPONENTIAL_BACKOFF_JITTER_FULL
+    /// Maps to full
     /// Link to documentation: https://aws.amazon.com/builders-library/timeouts-retries-and-backoff-with-jitter/
     case `default`
+
+    /// Do not perform any randomization on the reconnect delay
     case none
+
+    /// Fully random between no delay and the current exponential backoff value.
     case full
+
+    /// Backoff is taken randomly from the interval between the base backoff
+    /// interval and a scaling (greater than 1) of the current backoff value
     case decorrelated
 }