Reimplement the DeferredRender module (#13)

Gemfile

@@ -8,4 +8,5 @@ gemspec
 gem "benchmark-ips", "2.14.0"
 gem "minitest", "5.22.3"
 gem "rake", "13.2.1"
+gem "phlex", github: "phlex-ruby/phlex"
 gem "standard", "1.35.1"

lib/phlex/slotable.rb

@@ -5,13 +5,20 @@
 
 module Phlex
   module Slotable
+    module DeferredRender
+      def before_template(&)
+        vanish(&)
+        super
+      end
+    end
+
     def self.included(base)
       base.extend(ClassMethods)
     end
 
     module ClassMethods
       def slot(slot_name, callable = nil, types: nil, collection: false)
-        include Phlex::DeferredRender
+        include DeferredRender
 
         if types
           types.each do |type, callable|

phlex-slotable.gemspec

@@ -32,7 +32,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   # Uncomment to register a new dependency of your gem
-  spec.add_dependency "phlex", ">= 1.9", "< 3"
+  # spec.add_dependency "phlex", ">= 1.9", "< 3"
 
   # For more information and examples about making a new gem, check out our
   # guide at: https://bundler.io/guides/creating_gem.html