Bump version to 3.6.4

package.json

@@ -9,7 +9,7 @@
     "bdd"
   ],
   "license": "MIT",
-  "version": "3.6.3",
+  "version": "3.6.4",
   "repository": {
     "type": "git",
     "url": "https://github.com/jasmine/jasmine-npm"

release_notes/3.6.4.md

@@ -0,0 +1,17 @@
+# Jasmine NPM 3.6.4 Release Notes
+
+## Summary
+
+This is a bugfix release that removes the `engines` specification.
+
+## Changes
+
+* Removed `engines` field from package.json
+
+The engines field was added in 3.6.3 in an attempt to better document the set
+of Node versions that Jasmine supports, but it's caused more problems than it
+solves. In particular, Yarn users receive an error rather than a warning when
+using a version of Node that works but isn't supported.
+
+See <https://jasmine.github.io/setup/nodejs.html> for a list of supported Node
+versions.