Prepare 0.8.7 release notes

Author: avh4

CHANGELOG.md

@@ -1,11 +1,12 @@
-## main
+## 0.8.7
 
 New features:
   - `case ... then` is now auto-corrected to `case ... of`
   - `=>` is now auto-corrected to `->`
 
 Bug fixes:
   - Top-level declarations named "infix" no longer make files unprocessable
+  - The npm installer should now work correctly on Windows (was broken for 0.8.6)
 
 
 ## 0.8.6

Release Notes/0.8.7.md

@@ -0,0 +1,31 @@
+## Small improvements and fixed npm installer for Windows
+
+Version 0.8.6 was not widely announced because of an issue with the npm installer on Windows,
+so check the [0.8.6 release notes](https://github.com/avh4/elm-format/releases/tag/0.8.6) as well.
+Below are the additional changes in 0.8.7.
+
+New features:
+  - `case ... then` is now auto-corrected to `case ... of`
+  - `=>` is now auto-corrected to `->`
+
+Bug fixes:
+  - Top-level declarations named "infix" no longer make files unprocessable
+  - The npm installer should now work correctly on Windows (was broken for 0.8.6)
+
+
+## Install
+
+```sh
+npm install -g elm-format
+```
+
+or [download from the release page](https://github.com/avh4/elm-format/releases/tag/0.8.7).
+
+
+## Thanks to ...
+
+  - @kutyel for lenient parsing additions
+  - @emmabastas for the initial draft of test coverage scripts
+  - @jfmengels for continued thoughtful issue discussion across the Elm devtools community (only partially related to elm-format, but thank you!)
+  - @8n8 for code cleanup help
+  - [Lamdera](https://www.lamdera.com/) for providing CI runners to build the MacOS ARM64 release binaries