v0.9 release notes (#85)

* add config tip

* add v0.9 release notes

Author: sawka

docs/config.mdx

@@ -4,13 +4,20 @@ id: "config"
 title: "Configuration"
 ---
 
-Wave's configuration files are located at `~/.waveterm/config/`.
+Wave's configuration files are located at `~/.config/waveterm/`.
 
-The main configuration file is `settings.json` (`~/.waveterm/config/settings.json`).
+The main configuration file is `settings.json` (`~/.config/waveterm/settings.json`).
 
 The file is structured as a mostly flat JSON file.  Instead of using sub-objects we prefer to
 use ":" as level separators.
 
+:::info
+
+If you installed Wave pre-v0.9.0 your configuration file will be located at
+`~/.waveterm/config/settings.json`.
+
+:::
+
 | Key Name | Type | Function |
 |----------|------|----------|
 | ai:preset | string | the default AI preset to use |

docs/releasenotes.mdx

@@ -6,6 +6,18 @@ sidebar_position: 9
 
 # Release Notes
 
+### v0.9.0 — Oct 28, 2024
+
+New major Wave Terminal release!  Wave tabs are now cached.  Tab switching performance is
+now much faster and webview state, editor state, and scroll positions are now persisted
+across tab changes.  We also have native WSL2 support.  You can create native Wave connections
+to your Windows WSL2 distributions using the connection button.
+
+We've also laid the groundwork for some big features that will be released over the
+next couple of weeks, including Workspaces, AI improvments, and custom widgets.
+
+Lots of other smaller changes and bug fixes.  See full list of PRs at https://github.com/wavetermdev/waveterm/releases/tag/v0.9.0
+
 ### v0.8.13 — Oct 24, 2024
 
 * Wave is now available as a Snap for Linux users! You can find it [in the Snap Store](https://snapcraft.io/waveterm).