Add changelog entries to release notes

Author: christianbundy

docs/release-notes-template.md

@@ -1,18 +1,18 @@
 :tada: **Thanks for downloading Patchwork!** Check out [the changelog](https://github.com/ssbc/patchwork/blob/master/docs/CHANGELOG.md) to see what's new.
-
 ## Install
 
 - **Windows:** [`ssb-patchwork-setup-$$VERSION.exe`][exe]
 - **macOS:** [`Patchwork-$$VERSION.dmg`][dmg] (you may need to [allow apps from "unidentified" developers](https://support.apple.com/kb/PH25088))
 - **Linux:** [`ssb-patchwork-$$VERSION-x86_64.AppImage`][appimage] (you will need to [make it executable](https://docs.appimage.org/user-guide/run-appimages.html))
 
-
 ## Getting started
 
 If this is your first time on Scuttlebutt you may need an invite to get connected. After installing Patchwork and choosing your name you should select the **Join Pub** button. You'll need to [get a pub invite](https://github.com/ssbc/ssb-server/wiki/Pub-Servers#public-pubs), paste it into the prompt, and select **Redeem invite**.
 
 You can find more information in the [Getting Started Guide](https://www.scuttlebutt.nz/getting-started).
 
+## Changes
+$$CHANGES
 ## Support
 
 :thinking:  [Any questions? Check out the Scuttlebutt FAQ!](https://www.scuttlebutt.nz/faq/)

scripts/release-notes.js

@@ -8,6 +8,33 @@ if (version == null) {
 }
 
 const template = fs.readFileSync(path.join(__dirname, '..', 'docs', 'release-notes-template.md'), 'utf8')
+const changelog = fs.readFileSync(path.join(__dirname, '..', 'docs', 'CHANGELOG.md'), 'utf8')
+
+let record = false
+const lines = changelog.split('\n')
+
+const relevantLines = lines.reduce((acc, cur) => {
+  if (cur.startsWith('## ')) {
+    if (cur.startsWith(`## v${version}`)) {
+      record = true
+      return acc
+    } else {
+      record = false
+      return acc
+    }
+  }
+
+  if (record) {
+    acc.push(cur)
+  }
+
+  return acc
+}, [])
+
+const changes = relevantLines.join('\n')
+
+const releaseNotes = template
+  .replace(/\$\$VERSION/g, version)
+  .replace(/\$\$CHANGES/g, changes)
 
-const releaseNotes = template.replace(/\$\$VERSION/g, version)
 console.log(releaseNotes)