Implement many more nodes

Adds these new styling and formatting nodes
* strike
* highlight
* linebreaks
* pagebreaks
* Hyperlinks

lib/notare/nodes/break.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module Notare
+  module Nodes
+    class Break < Base
+      attr_reader :type
+
+      def initialize(type: :line)
+        super()
+        @type = type
+      end
+
+      def page?
+        type == :page
+      end
+    end
+  end
+end