Mention classpath options in release notes

notes/v1.0.0-M8.md

@@ -4,6 +4,10 @@ This is the eighth milestone of Bloop! :tada:
 
 While we're working on ergonomics and making bloop easier to use by both users and build tools, this release is a hotfix of M7.
 
+**This milestone of Bloop includes changes to the configuration files; you'll need to re-generate
+your configuration files if you used a previous version of Bloop. See the [installation
+instructions][installation instructions].**
+
 ## Install the latest release
 
 If you're on Mac OS X, upgrade to the latest version with:
@@ -49,6 +53,16 @@ As reported in [this ticket](https://github.com/facebook/nailgun/issues/112).
 
 This new release fixes this issue, and now the server doesn't throw any exception. While this is not something important because the logs of the nailgun server should not be relevant, it cleans up logs and limits users' confusion whehn using Bloop.
 
+#### [Support for classpath options][#110]
+
+Bloop now observes the `classpathOptions` setting defined in sbt builds. This setting configures how
+the compilation classpath is constructed (whether to include the Scala compiler, automatically
+append the Scala standard library, etc.)
+
+This change requires that configuration files are re-generated. The instructions for generating the
+configuration files can be found in [the installation instructions][installation instructions].
+
+[#110]: https://github.com/scalacenter/bloop/pull/110
 [#341]: https://github.com/scalacenter/bloop/pull/341
 [#343]: https://github.com/scalacenter/bloop/pull/343
 [#345]: https://github.com/scalacenter/bloop/pull/345