Release v0.24 - A Sight For Sore Eyes (#1539)

* Add release notes and bump version to 0.24

* run "build FormatCode" to fix up whitespace/formatting issues

* Fix failing Ssh key tests due to "validation exception".  This key must be in use on github (under another user, most likely from these tests failing).  Changed to a new SSH key and tweaked tests to reduce chance of a key being created and not destroyed

* Assignee and Assignees cant both be specified on NewIssue.  We missed this one in the PR.  Marked Assignee as [Obsolete] and fixed tests to use Assignees

* Fix a couple of Reactions tests that were calling the wrong client methods

* Fix timeline tests - looks like the response class has changed shape a bit, it now has an Issue object in the payload and Id field isnt present (leaving Id field there in case other timeline events do use it)

* Fix some following tests that require the test user to follow more than 1 other user

* Unskip these Event tests now because apparently they work!

* add breaking changes notes

* Update ApiErrorMessageSafe to return null for empty and whitespace strings (#1540)

* return null if ApiError.Message is empty or whitespace

* Uncomment test, which now passes

* update release notes to include PR1540

* Add "Bot" AccountType, was causing a deserialization exception when running the integration test "SearchForExcludedLanguage" (#1541)

* Update to include PR1541

* add bullets to make release notes easier to read

* markup additional code mentions in notes

* Fix grammar

fields => field

Octokit.Tests/Reactive/ObservableEventsClientTests.cs

@@ -83,7 +83,7 @@ namespace Octokit.Tests.Reactive
 
                 client.GetAllForRepository(1);
 
-                gitHubClient.Connection.Received(1).Get<List<Activity>>(new Uri("repositories/1/events", UriKind.Relative), 
+                gitHubClient.Connection.Received(1).Get<List<Activity>>(new Uri("repositories/1/events", UriKind.Relative),
                     Args.EmptyDictionary, null);
             }
 
@@ -102,7 +102,7 @@ namespace Octokit.Tests.Reactive
 
                 client.GetAllForRepository("fake", "repo", options);
 
-                gitHubClient.Connection.Received(1).Get<List<Activity>>(new Uri("repos/fake/repo/events", UriKind.Relative), 
+                gitHubClient.Connection.Received(1).Get<List<Activity>>(new Uri("repos/fake/repo/events", UriKind.Relative),
                     Arg.Is<IDictionary<string, string>>(d => d.Count == 2), null);
             }
 
@@ -121,7 +121,7 @@ namespace Octokit.Tests.Reactive
 
                 client.GetAllForRepository(1, apiOptions);
 
-                gitHubClient.Connection.Received(1).Get<List<Activity>>(new Uri("repositories/1/events", UriKind.Relative), 
+                gitHubClient.Connection.Received(1).Get<List<Activity>>(new Uri("repositories/1/events", UriKind.Relative),
                     Arg.Is<IDictionary<string, string>>(d => d.Count == 2), null);
             }
 
@@ -156,7 +156,7 @@ namespace Octokit.Tests.Reactive
 
                 client.GetAllIssuesForRepository("fake", "repo");
 
-                gitHubClient.Connection.Received(1).Get<List<IssueEvent>>(new Uri("repos/fake/repo/issues/events", UriKind.Relative), 
+                gitHubClient.Connection.Received(1).Get<List<IssueEvent>>(new Uri("repos/fake/repo/issues/events", UriKind.Relative),
                     Args.EmptyDictionary, null);
             }
 
@@ -168,7 +168,7 @@ namespace Octokit.Tests.Reactive
 
                 client.GetAllIssuesForRepository(1);
 
-                gitHubClient.Connection.Received(1).Get<List<IssueEvent>>(new Uri("repositories/1/issues/events", UriKind.Relative), 
+                gitHubClient.Connection.Received(1).Get<List<IssueEvent>>(new Uri("repositories/1/issues/events", UriKind.Relative),
                     Args.EmptyDictionary, null);
             }
 
@@ -187,7 +187,7 @@ namespace Octokit.Tests.Reactive
 
                 client.GetAllIssuesForRepository("fake", "repo", options);
 
-                gitHubClient.Connection.Received(1).Get<List<IssueEvent>>(new Uri("repos/fake/repo/issues/events", UriKind.Relative), 
+                gitHubClient.Connection.Received(1).Get<List<IssueEvent>>(new Uri("repos/fake/repo/issues/events", UriKind.Relative),
                     Arg.Is<IDictionary<string, string>>(d => d.Count == 2), null);
             }
 
@@ -206,7 +206,7 @@ namespace Octokit.Tests.Reactive
 
                 client.GetAllIssuesForRepository(1, options);
 
-                gitHubClient.Connection.Received(1).Get<List<IssueEvent>>(new Uri("repositories/1/issues/events", UriKind.Relative), 
+                gitHubClient.Connection.Received(1).Get<List<IssueEvent>>(new Uri("repositories/1/issues/events", UriKind.Relative),
                     Arg.Is<IDictionary<string, string>>(d => d.Count == 2), null);
             }