Update version and add Date header to response

shard.yml

@@ -1,5 +1,5 @@
 name: kemal
-version: 1.4.0
+version: 1.4.1
 
 authors:
   - Serdar Dogruyol <dogruyolserdar@gmail.com>
@@ -10,7 +10,7 @@ dependencies:
     version: ~> 0.4.0
   exception_page:
     github: crystal-loot/exception_page
-    version: ~> 0.3.0
+    version: ~> 0.4.0
 
 development_dependencies:
   ameba:

src/kemal/init_handler.cr

@@ -9,6 +9,7 @@ module Kemal
     def call(context : HTTP::Server::Context)
       context.response.headers.add "X-Powered-By", "Kemal" if Kemal.config.powered_by_header?
       context.response.content_type = "text/html" unless context.response.headers.has_key?("Content-Type")
+      context.response.headers.add "Date", Time.local.to_rfc2822
       call_next context
     end
   end