diff --git a/src/clj/shapey_shifty/context/core.clj b/src/clj/shapey_shifty/context/core.clj
new file mode 100644
index 0000000..01079ac
--- /dev/null
+++ b/src/clj/shapey_shifty/context/core.clj
@@ -0,0 +1,9 @@
+(ns shapey-shifty.context.core
+  (:require [clojure.spec.alpha :as s]
+            [shapey-shifty.posts.core :as posts]
+            [shapey-shifty.index.index :as index]))
+
+(s/def ::posts (s/coll-of :posts/post))
+(s/def ::index :index/index)
+
+(s/def ::context (s/keys :req [::posts ::current-time ::index]))
diff --git a/src/clj/shapey_shifty/core.clj b/src/clj/shapey_shifty/core.clj
index 604ae1e..04b9b74 100644
--- a/src/clj/shapey_shifty/core.clj
+++ b/src/clj/shapey_shifty/core.clj
@@ -7,6 +7,7 @@
    [shapey-shifty.config :refer [env]]
    [clojure.tools.cli :refer [parse-opts]]
    [clojure.tools.logging :as log]
+   [shapey-shifty.posts.post-io :as io]
    [mount.core :as mount])
   (:gen-class))
 
@@ -25,6 +26,7 @@
 (mount/defstate index :start (if-let [path (env :index-path)]
                                (index/create-index path)
                                (index/create-index "resources/index.edn")))
+(mount/defstate file-keeper :start)
 
 (mount/defstate ^{:on-reload :noop} http-server
   :start
diff --git a/src/clj/shapey_shifty/posts/core.clj b/src/clj/shapey_shifty/posts/core.clj
index 3aa38bf..9d07735 100644
--- a/src/clj/shapey_shifty/posts/core.clj
+++ b/src/clj/shapey_shifty/posts/core.clj
@@ -22,10 +22,10 @@
 (s/def ::status keyword?)
 
 (s/def ::properties
-  (s/keys :req [::name ::author ::published ::stub ::filename ::created]))
+  (s/keys :req-un [::name ::author ::published ::stub ::filename ::created]))
 
 (s/def ::post
-  (s/keys :req [::type ::properties ::content]))
+  (s/keys :req-un [::type ::properties ::content]))
 
 (defprotocol PostKeeper
   (create-post [this post])
diff --git a/tags b/tags
new file mode 100644
index 0000000..e87bbd9
--- /dev/null
+++ b/tags
@@ -0,0 +1,88 @@
+!_TAG_FILE_FORMAT	2	/extended format; --format=1 will not append ;" to lines/
+!_TAG_FILE_SORTED	1	/0=unsorted, 1=sorted, 2=foldcase/
+!_TAG_OUTPUT_MODE	u-ctags	/u-ctags or e-ctags/
+!_TAG_PROGRAM_AUTHOR	Universal Ctags Team	//
+!_TAG_PROGRAM_NAME	Universal Ctags	/Derived from Exuberant Ctags/
+!_TAG_PROGRAM_URL	https://ctags.io/	/official site/
+!_TAG_PROGRAM_VERSION	0.0.0	//
+-main	src/clj/shapey_shifty/core.clj	/^(defn -main [& args]$/;"	f	namespace:shapey-shifty.core
+.material-icons	resources/public/css/screen.css	/^.material-icons {$/;"	c
+Error: {{status}}	resources/html/error.html	/^        <h1><span class="is-size-4 has-text-danger">Error: {{status}}<\/span><\/h1>$/;"	h
+License	README.md	/^## License$/;"	s
+Managing your middleware	resources/docs/docs.md	/^#### Managing your middleware$/;"	t
+Need some help?	resources/docs/docs.md	/^#### Need some help?$/;"	t
+Organizing the routes	resources/docs/docs.md	/^#### Organizing the routes$/;"	t
+Prerequisites	README.md	/^## Prerequisites$/;"	s
+Running	README.md	/^## Running$/;"	s
+Why are you seeing this page?	resources/docs/docs.md	/^#### Why are you seeing this page?$/;"	t
+about-page	src/clj/shapey_shifty/routes/home.clj	/^(defn about-page [request]$/;"	f	namespace:shapey-shifty.routes.home
+add-load-post-step	src/clj/shapey_shifty/pipeline/core.clj	/^(defn add-load-post-step [f]$/;"	f	namespace:shapey-shifty.pipeline.core
+add-pipeline	src/clj/shapey_shifty/pipeline/core.clj	/^(defn add-pipeline [k v]$/;"	f	namespace:shapey-shifty.pipeline.core
+add-post-to-index	src/clj/shapey_shifty/index/index.clj	/^(defn add-post-to-index [index post]$/;"	f	namespace:shapey-shifty.index.index
+add-render-post-step	src/clj/shapey_shifty/pipeline/core.clj	/^(defn add-render-post-step [f]$/;"	f	namespace:shapey-shifty.pipeline.core
+add-write-post-step	src/clj/shapey_shifty/pipeline/core.clj	/^(defn add-write-post-step [f]$/;"	f	namespace:shapey-shifty.pipeline.core
+app	src/clj/shapey_shifty/handler.clj	/^(defn app []$/;"	f	namespace:shapey-shifty.handler
+assoc-author	src/clj/shapey_shifty/posts/posts_io.clj	/^(defn assoc-author [post]$/;"	f	namespace:shapey-shifty.posts.posts-io
+body	resources/public/css/screen.css	/^body {$/;"	s
+count-posts-in-date	src/clj/shapey_shifty/posts/posts_io.clj	/^(defn count-posts-in-date [dt-path]$/;"	f	namespace:shapey-shifty.posts.posts-io
+crawl-posts!	src/clj/shapey_shifty/index/index.clj	/^(defn crawl-posts!$/;"	f	namespace:shapey-shifty.index.index
+create-author	src/clj/shapey_shifty/authors/author_core.clj	/^(defn create-author []$/;"	f	namespace:shapey-shifty.authors.author-core
+create-empty-post	src/clj/shapey_shifty/posts/core.clj	/^(defn create-empty-post [] {::type :note ::key (java.util.UUID\/randomUUID) ::content ""$/;"	f	namespace:shapey-shifty.posts.core
+create-index	src/clj/shapey_shifty/index/index.clj	/^(defn create-index [index-path]$/;"	f	namespace:shapey-shifty.index.index
+create-path-by-date	src/clj/shapey_shifty/posts/posts_io.clj	/^(defn create-path-by-date [year month day]$/;"	f	namespace:shapey-shifty.posts.posts-io
+datetime-filename-resolver	src/clj/shapey_shifty/posts/posts_io.clj	/^(defn datetime-filename-resolver [post]$/;"	f	namespace:shapey-shifty.posts.posts-io
+error-page	src/clj/shapey_shifty/layout.clj	/^(defn error-page$/;"	f	namespace:shapey-shifty.layout
+execute-pipeline	src/clj/shapey_shifty/pipeline/core.clj	/^(defn execute-pipeline [k params]$/;"	f	namespace:shapey-shifty.pipeline.core
+get-post	src/clj/shapey_shifty/routes/post_router.clj	/^(defn get-post$/;"	f	namespace:shapey-shifty.routes.post-router
+home-page	src/clj/shapey_shifty/routes/home.clj	/^(defn home-page [request]$/;"	f	namespace:shapey-shifty.routes.home
+home-routes	src/clj/shapey_shifty/routes/home.clj	/^(defn home-routes []$/;"	f	namespace:shapey-shifty.routes.home
+html	resources/public/css/screen.css	/^html,$/;"	s
+load-all-authors	src/clj/shapey_shifty/authors/author_core.clj	/^(defn load-all-authors []$/;"	f	namespace:shapey-shifty.authors.author-core
+load-author	src/clj/shapey_shifty/authors/author_core.clj	/^(defn load-author [author-name]$/;"	f	namespace:shapey-shifty.authors.author-core
+nav-menu	resources/html/base.html	/^              <div id="nav-menu" class="navbar-menu">$/;"	I
+parse-json	test/clj/shapey_shifty/test/handler.clj	/^(defn parse-json [body]$/;"	f	namespace:shapey-shifty.test.handler
+pathmap-to-path	src/clj/shapey_shifty/posts/posts_io.clj	/^(defn pathmap-to-path [{:keys [year month day]}]$/;"	f	namespace:shapey-shifty.posts.posts-io
+post-view	src/clj/shapey_shifty/routes/home.clj	/^(defn post-view [request]$/;"	f	namespace:shapey-shifty.routes.home
+read-post	src/clj/shapey_shifty/posts/posts_io.clj	/^(defn read-post$/;"	f	namespace:shapey-shifty.posts.posts-io
+render	src/clj/shapey_shifty/layout.clj	/^(defn render$/;"	f	namespace:shapey-shifty.layout
+restart	env/dev/clj/user.clj	/^(defn restart$/;"	f	namespace:user
+set-author	src/clj/shapey_shifty/posts/core.clj	/^(defn set-author [post author]$/;"	f	namespace:shapey-shifty.posts.core
+set-content	src/clj/shapey_shifty/posts/core.clj	/^(defn set-content [post post-content]$/;"	f	namespace:shapey-shifty.posts.core
+set-name	src/clj/shapey_shifty/posts/core.clj	/^(defn set-name [post post-name]$/;"	f	namespace:shapey-shifty.posts.core
+set-publish-date	src/clj/shapey_shifty/posts/core.clj	/^(defn set-publish-date [post date]$/;"	f	namespace:shapey-shifty.posts.core
+set-type	src/clj/shapey_shifty/posts/core.clj	/^(defn set-type [post post-type]$/;"	f	namespace:shapey-shifty.posts.core
+shapey-shifty	README.md	/^# shapey-shifty$/;"	c
+shapey-shifty.authors.author-core	src/clj/shapey_shifty/authors/author_core.clj	/^(ns shapey-shifty.authors.author-core$/;"	n
+shapey-shifty.config	src/clj/shapey_shifty/config.clj	/^(ns shapey-shifty.config$/;"	n
+shapey-shifty.core	src/clj/shapey_shifty/core.clj	/^(ns shapey-shifty.core$/;"	n
+shapey-shifty.dev-middleware	env/dev/clj/shapey_shifty/dev_middleware.clj	/^(ns shapey-shifty.dev-middleware$/;"	n
+shapey-shifty.env	env/dev/clj/shapey_shifty/env.clj	/^(ns shapey-shifty.env$/;"	n
+shapey-shifty.env	env/prod/clj/shapey_shifty/env.clj	/^(ns shapey-shifty.env$/;"	n
+shapey-shifty.handler	src/clj/shapey_shifty/handler.clj	/^(ns shapey-shifty.handler$/;"	n
+shapey-shifty.index.index	src/clj/shapey_shifty/index/index.clj	/^(ns shapey-shifty.index.index$/;"	n
+shapey-shifty.layout	src/clj/shapey_shifty/layout.clj	/^(ns shapey-shifty.layout$/;"	n
+shapey-shifty.middleware	src/clj/shapey_shifty/middleware.clj	/^(ns shapey-shifty.middleware$/;"	n
+shapey-shifty.middleware.formats	src/clj/shapey_shifty/middleware/formats.clj	/^(ns shapey-shifty.middleware.formats$/;"	n
+shapey-shifty.nrepl	src/clj/shapey_shifty/nrepl.clj	/^(ns shapey-shifty.nrepl$/;"	n
+shapey-shifty.pipeline.core	src/clj/shapey_shifty/pipeline/core.clj	/^(ns shapey-shifty.pipeline.core)$/;"	n
+shapey-shifty.posts.core	src/clj/shapey_shifty/posts/core.clj	/^(ns shapey-shifty.posts.core$/;"	n
+shapey-shifty.posts.posts-io	src/clj/shapey_shifty/posts/posts_io.clj	/^(ns shapey-shifty.posts.posts-io$/;"	n
+shapey-shifty.routes.home	src/clj/shapey_shifty/routes/home.clj	/^(ns shapey-shifty.routes.home$/;"	n
+shapey-shifty.routes.post-router	src/clj/shapey_shifty/routes/post_router.clj	/^(ns shapey-shifty.routes.post-router$/;"	n
+shapey-shifty.test.handler	test/clj/shapey_shifty/test/handler.clj	/^(ns shapey-shifty.test.handler$/;"	n
+start	env/dev/clj/user.clj	/^(defn start$/;"	f	namespace:user
+start	src/clj/shapey_shifty/nrepl.clj	/^(defn start$/;"	f	namespace:shapey-shifty.nrepl
+start-app	src/clj/shapey_shifty/core.clj	/^(defn start-app [args]$/;"	f	namespace:shapey-shifty.core
+stop	env/dev/clj/user.clj	/^(defn stop$/;"	f	namespace:user
+stop	src/clj/shapey_shifty/nrepl.clj	/^(defn stop [server]$/;"	f	namespace:shapey-shifty.nrepl
+stop-app	src/clj/shapey_shifty/core.clj	/^(defn stop-app []$/;"	f	namespace:shapey-shifty.core
+update-pipeline	src/clj/shapey_shifty/pipeline/core.clj	/^(defn update-pipeline [k f]$/;"	f	namespace:shapey-shifty.pipeline.core
+user	env/dev/clj/user.clj	/^(ns user$/;"	n
+wrap-base	src/clj/shapey_shifty/middleware.clj	/^(defn wrap-base [handler]$/;"	f	namespace:shapey-shifty.middleware
+wrap-csrf	src/clj/shapey_shifty/middleware.clj	/^(defn wrap-csrf [handler]$/;"	f	namespace:shapey-shifty.middleware
+wrap-dev	env/dev/clj/shapey_shifty/dev_middleware.clj	/^(defn wrap-dev [handler]$/;"	f	namespace:shapey-shifty.dev-middleware
+wrap-formats	src/clj/shapey_shifty/middleware.clj	/^(defn wrap-formats [handler]$/;"	f	namespace:shapey-shifty.middleware
+wrap-internal-error	src/clj/shapey_shifty/middleware.clj	/^(defn wrap-internal-error [handler]$/;"	f	namespace:shapey-shifty.middleware
+write-post	src/clj/shapey_shifty/posts/posts_io.clj	/^(defn write-post [post dt-path]$/;"	f	namespace:shapey-shifty.posts.posts-io
+{{post.name}}	resources/html/post.html	/^	<h1 class="p-name">{{post.name}}<\/h1>$/;"	h
+{{title}}	resources/html/error.html	/^        <h2 class="without-margin">{{title}}<\/h2>$/;"	i