Prepare for dartdoc-0.26.1 (#1867)

* Prepare for dartdoc-0.26.1

* Update PR number for flutter in Changelog

* Update changelog with differences in plugin behavior

Author: jcollins-g

CHANGELOG.md

@@ -1,3 +1,14 @@
+## 0.26.1
+* Fix bug that accidentally caused dartdoc to create (and overwrite with)
+  multiple snapshots in parallel for a single tool (#1861, #1862)
+* Refactor comment reference handling for performance and readability (#1863)
+* Simplify temp file creation and reduce the amount of filesystem churn
+  for tools (#1865)
+* Reenable testing for flutter plugin doc generation (This requires
+  a Flutter SDK with flutter/flutter#25243 to work with tools enabled).
+  Flutter plugin doc generation now requires your flutter installation to have
+  'flutter update-packages' run on it before it will work.
+
 ## 0.26.0
 * Remove crossdart support (#1856)
 * Launch helper tools and construct PackageGraphs asynchronously (#1849)

lib/src/version.dart

@@ -1,2 +1,2 @@
 // Generated code. Do not modify.
-const packageVersion = '0.26.0';
+const packageVersion = '0.26.1';

pubspec.yaml

@@ -1,6 +1,6 @@
 name: dartdoc
 # Also update the `version` field in lib/dartdoc.dart.
-version: 0.26.0
+version: 0.26.1
 author: Dart Team <[email protected]>
 description: A documentation generator for Dart.
 homepage: https://github.com/dart-lang/dartdoc