Update more places

CONTRIBUTING.md

@@ -1,5 +1,8 @@
 # Submitting pull requests
 
+**NOTE: Please read [Readme #Maintained-by](https://github.com/lightbend/config#Maintained-by) before investing time in suggesting changes to this library.**
+
+
 Pull requests should go via GitHub; there are some nice
 [general guidelines for contributing on GitHub](https://guides.github.com/activities/contributing-to-open-source/)
 if you haven't done it before.

README.md

@@ -1,12 +1,8 @@
-Configuration library for JVM languages.
+# Configuration library for JVM languages.
 
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.typesafe/config/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.typesafe/config)
 [![Build Status](https://github.com/lightbend/config/actions/workflows/ci.yml/badge.svg)](https://github.com/lightbend/config/actions/workflows/ci.yml)
 
-If you have questions or are working on a pull request or just
-curious, please feel welcome to join the chat room:
-[![Join chat https://gitter.im/lightbend/config](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/lightbend/config?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-
 ## Overview
 
  - implemented in plain Java with no dependencies
@@ -98,8 +94,7 @@ to merge it in.
 
 ### Binary Releases
 
-Version 1.2.1 and earlier were built for Java 6, while newer
-versions (1.3.0 and above) will be built for Java 8.
+Typesafe Config is compatible with Java 8 and above.
 
 You can find published releases on Maven Central.
 
@@ -133,6 +128,8 @@ https://github.com/lightbend/config/blob/main/NEWS.md
 
 ### Bugs and Patches
 
+**NOTE: Please read [Readme #Maintained-by](https://github.com/lightbend/config#Maintained-by) before investing time to suggest changes to this library.**
+
 Report bugs to the GitHub issue tracker. Send patches as pull
 requests on GitHub.
 
@@ -949,6 +946,6 @@ The license is Apache 2.0, see LICENSE-2.0.txt.
 
 ## Maintained by 
 
-The "Typesafe Config" library is even in 2023 an important foundation to how Akka and other JVM libraries manage configuration. While we at [Lightbend](https://lightbend.com) understand that there are things here and there that could be built out and improved, but we take stability over fixes here. We will make sure "Typesafe Config" keeps up with JVM versions, but will not invest in any other changes.
+The "Typesafe Config" library is even in 2023 an important foundation to how Akka and other JVM libraries manage configuration. While we at [Lightbend](https://lightbend.com) understand that there are things here and there that could be built out and improved, we take stability over fixes here. We will make sure "Typesafe Config" keeps up with JVM versions, but will rarely invest in any other changes.
 
 We are thankful for all the work [@havocp](https://github.com/havocp) has put into creating the library initially and supporting its users over many more years, even after leaving Lightbend.