Prepare v8.0.0 release (1st PS 0.15.0-compatible release) (#50)

* Update the bower dependencies

* Update the changelog

CHANGELOG.md

@@ -5,6 +5,17 @@ Notable changes to this project are documented in this file. The format is based
 ## [Unreleased]
 
 Breaking changes:
+
+New features:
+
+Bugfixes:
+
+Other improvements:
+
+## [v8.0.0](https://github.com/purescript-node/purescript-node-buffer/releases/tag/v8.0.0) - 2022-04-27
+
+Breaking changes:
+
 - Update project and deps to PureScript v0.15.0 (#46 by @sigma-andex and @JordanMartinez)
 
 New features:

bower.json

@@ -13,15 +13,15 @@
     "url": "https://github.com/purescript-node/purescript-node-buffer.git"
   },
   "dependencies": {
-    "purescript-arraybuffer-types": "main",
-    "purescript-effect": "master",
-    "purescript-maybe": "master",
-    "purescript-st": "master",
-    "purescript-unsafe-coerce": "master"
+    "purescript-arraybuffer-types": "^3.0.2",
+    "purescript-effect": "^4.0.0",
+    "purescript-maybe": "^6.0.0",
+    "purescript-st": "^6.0.0",
+    "purescript-unsafe-coerce": "^6.0.0"
   },
   "devDependencies": {
-    "purescript-assert": "master",
-    "purescript-console": "master",
-    "purescript-foldable-traversable": "master"
+    "purescript-assert": "^6.0.0",
+    "purescript-console": "^6.0.0",
+    "purescript-foldable-traversable": "^6.0.0"
   }
 }