[pkg/analysis_server_client] deprecate the package and rev the version

Change-Id: I6a5079911411851011ef0f29b0283a16557e6ff0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/267680
Commit-Queue: Devon Carew <devoncarew@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>

pkg/analysis_server_client/CHANGELOG.md

@@ -1,3 +1,8 @@
+# 2.0.1
+
+* Updated the readme to reflect that this package is discontinued; see
+  https://github.com/dart-lang/sdk/issues/50262 for details.
+
 # 2.0.0
 
 * Migrated to null safety.

pkg/analysis_server_client/README.md

@@ -3,6 +3,23 @@
 
 `package:analysis_server_client` is a client wrapper over the Analysis Server.
 
+## Update: this package has been discontinued
+
+This package has been discontinued and will not receive further updates.
+
+People who need similar functionality could:
+
+- continue to use the last published version; it should continue to be able to
+  talk to the analysis server for the foreseeable future
+- fork the package and maintain that fork (we don't expect that the analysis
+  server protocol will evolve significantly)
+- see if their use case could instead be satisfied by talking to the analysis
+  server over the LSP protocol (`dart language-server --protocol=lsp`)
+
+We welcome feedback about this at
+[#50262](https://github.com/dart-lang/sdk/issues/50262); that would also be a
+good place to discuss alternatives.
+
 ## Overview
 
  * Instances of [__Server__](lib/server.dart) manage a connection to an analysis server process,

pkg/analysis_server_client/pubspec.yaml

@@ -1,5 +1,5 @@
 name: analysis_server_client
-version: 2.0.0
+version: 2.0.1
 description:
   A client wrapper over analysis_server. Instances of the class Server manage a
   connection to a server process, and facilitate communication to and from the