Bump version to 3.9.1

Author: sgravrock

lib/jasmine/version.rb

@@ -1,3 +1,3 @@
 module Jasmine
-  VERSION = "3.9.0"
+  VERSION = "3.9.1"
 end

release_notes/3.9.1.md

@@ -0,0 +1,10 @@
+# Jasmine Gem 3.9.1 Release Notes
+
+3.9.1 is identical to 3.9.0 except that the gem description mentions that it is
+deprecated in favor of the `jasmine-browser-runner` NPM package. See the
+[3.9.0 release notes](https://github.com/jasmine/jasmine-gem/blob/main/release_notes/3.9.0.md)
+for more information.
+
+------
+
+_Release Notes generated with _[Anchorman](http://github.com/infews/anchorman)_