Squashed commit of the following:

commit bb79d80d284bf22ae17857b37630d3075635057e
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Mon Dec 5 11:06:53 2016 +0000

    Update changelog regarding Makefile

commit d74d0ac99da0b898d1a08ed270629bb00b492e34
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Sun Dec 4 19:24:09 2016 +0000

    make output

commit 5c7ad5830ec881a5c22bd737cac1ec3430577eb3
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Sun Dec 4 19:22:25 2016 +0000

    Remove gulp

commit 160947dcd346d3c0016a15fe3b64d6f194d33bfc
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Sun Dec 4 19:10:57 2016 +0000

    Updated fetch dependency

commit 25b8f300d93c3e6e129c7ac6ab31e85c12cebc6a
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Sun Dec 4 18:45:21 2016 +0000

    Copy frontend assets into place

commit 65b02a14e98215899efc4f5673953bdf23f4c942
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Sun Dec 4 18:40:28 2016 +0000

    Add the target file for `sass`, and set the scss files as the prerequisits

commit 7442df5040ac1459d5f088690390ef043f968852
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Fri Dec 2 21:44:19 2016 +0000

    Makefile output so far

commit 8580a61aa2fb6326b99f58cb2d0418a45d734054
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Fri Dec 2 21:42:32 2016 +0000

    Create sourcemaps during js uglification

commit facdbbf81f4907ce394dcb5719b76451fd45e539
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Fri Dec 2 21:40:48 2016 +0000

    We can now uglify js files and compress all frontend assets

commit 866c4fa0d70377f80061533989c4d8e6d00c818c
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Thu Dec 1 15:57:49 2016 +0000

    A simple makefile

public/assets/frontend/fetch.js

@@ -20,6 +20,28 @@
     arrayBuffer: 'ArrayBuffer' in self
   }
 
+  if (support.arrayBuffer) {
+    var viewClasses = [
+      '[object Int8Array]',
+      '[object Uint8Array]',
+      '[object Uint8ClampedArray]',
+      '[object Int16Array]',
+      '[object Uint16Array]',
+      '[object Int32Array]',
+      '[object Uint32Array]',
+      '[object Float32Array]',
+      '[object Float64Array]'
+    ]
+
+    var isDataView = function(obj) {
+      return obj && DataView.prototype.isPrototypeOf(obj)
+    }
+
+    var isArrayBufferView = ArrayBuffer.isView || function(obj) {
+      return obj && viewClasses.indexOf(Object.prototype.toString.call(obj)) > -1
+    }
+  }
+
   function normalizeName(name) {
     if (typeof name !== 'string') {
       name = String(name)
@@ -152,14 +174,36 @@
 
   function readBlobAsArrayBuffer(blob) {
     var reader = new FileReader()
+    var promise = fileReaderReady(reader)
     reader.readAsArrayBuffer(blob)
-    return fileReaderReady(reader)
+    return promise
   }
 
   function readBlobAsText(blob) {
     var reader = new FileReader()
+    var promise = fileReaderReady(reader)
     reader.readAsText(blob)
-    return fileReaderReady(reader)
+    return promise
+  }
+
+  function readArrayBufferAsText(buf) {
+    var view = new Uint8Array(buf)
+    var chars = new Array(view.length)
+
+    for (var i = 0; i < view.length; i++) {
+      chars[i] = String.fromCharCode(view[i])
+    }
+    return chars.join('')
+  }
+
+  function bufferClone(buf) {
+    if (buf.slice) {
+      return buf.slice(0)
+    } else {
+      var view = new Uint8Array(buf.byteLength)
+      view.set(new Uint8Array(buf))
+      return view.buffer
+    }
   }
 
   function Body() {
@@ -167,7 +211,9 @@
 
     this._initBody = function(body) {
       this._bodyInit = body
-      if (typeof body === 'string') {
+      if (!body) {
+        this._bodyText = ''
+      } else if (typeof body === 'string') {
         this._bodyText = body
       } else if (support.blob && Blob.prototype.isPrototypeOf(body)) {
         this._bodyBlob = body
@@ -175,11 +221,12 @@
         this._bodyFormData = body
       } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) {
         this._bodyText = body.toString()
-      } else if (!body) {
-        this._bodyText = ''
-      } else if (support.arrayBuffer && ArrayBuffer.prototype.isPrototypeOf(body)) {
-        // Only support ArrayBuffers for POST method.
-        // Receiving ArrayBuffers happens via Blobs, instead.
+      } else if (support.arrayBuffer && support.blob && isDataView(body)) {
+        this._bodyArrayBuffer = bufferClone(body.buffer)
+        // IE 10-11 can't handle a DataView body.
+        this._bodyInit = new Blob([this._bodyArrayBuffer])
+      } else if (support.arrayBuffer && (ArrayBuffer.prototype.isPrototypeOf(body) || isArrayBufferView(body))) {
+        this._bodyArrayBuffer = bufferClone(body)
       } else {
         throw new Error('unsupported BodyInit type')
       }
@@ -204,6 +251,8 @@
 
         if (this._bodyBlob) {
           return Promise.resolve(this._bodyBlob)
+        } else if (this._bodyArrayBuffer) {
+          return Promise.resolve(new Blob([this._bodyArrayBuffer]))
         } else if (this._bodyFormData) {
           throw new Error('could not read FormData body as blob')
         } else {
@@ -212,27 +261,28 @@
       }
 
       this.arrayBuffer = function() {
-        return this.blob().then(readBlobAsArrayBuffer)
-      }
-
-      this.text = function() {
-        var rejected = consumed(this)
-        if (rejected) {
-          return rejected
-        }
-
-        if (this._bodyBlob) {
-          return readBlobAsText(this._bodyBlob)
-        } else if (this._bodyFormData) {
-          throw new Error('could not read FormData body as text')
+        if (this._bodyArrayBuffer) {
+          return consumed(this) || Promise.resolve(this._bodyArrayBuffer)
         } else {
-          return Promise.resolve(this._bodyText)
+          return this.blob().then(readBlobAsArrayBuffer)
         }
       }
-    } else {
-      this.text = function() {
-        var rejected = consumed(this)
-        return rejected ? rejected : Promise.resolve(this._bodyText)
+    }
+
+    this.text = function() {
+      var rejected = consumed(this)
+      if (rejected) {
+        return rejected
+      }
+
+      if (this._bodyBlob) {
+        return readBlobAsText(this._bodyBlob)
+      } else if (this._bodyArrayBuffer) {
+        return Promise.resolve(readArrayBufferAsText(this._bodyArrayBuffer))
+      } else if (this._bodyFormData) {
+        throw new Error('could not read FormData body as text')
+      } else {
+        return Promise.resolve(this._bodyText)
       }
     }
 
@@ -260,7 +310,10 @@
   function Request(input, options) {
     options = options || {}
     var body = options.body
-    if (Request.prototype.isPrototypeOf(input)) {
+
+    if (typeof input === 'string') {
+      this.url = input
+    } else {
       if (input.bodyUsed) {
         throw new TypeError('Already read')
       }
@@ -271,12 +324,10 @@
       }
       this.method = input.method
       this.mode = input.mode
-      if (!body) {
+      if (!body && input._bodyInit != null) {
         body = input._bodyInit
         input.bodyUsed = true
       }
-    } else {
-      this.url = input
     }
 
     this.credentials = options.credentials || this.credentials || 'omit'
@@ -294,7 +345,7 @@
   }
 
   Request.prototype.clone = function() {
-    return new Request(this)
+    return new Request(this, { body: this._bodyInit })
   }
 
   function decode(body) {
@@ -310,16 +361,17 @@
     return form
   }
 
-  function headers(xhr) {
-    var head = new Headers()
-    var pairs = (xhr.getAllResponseHeaders() || '').trim().split('\n')
-    pairs.forEach(function(header) {
-      var split = header.trim().split(':')
-      var key = split.shift().trim()
-      var value = split.join(':').trim()
-      head.append(key, value)
+  function parseHeaders(rawHeaders) {
+    var headers = new Headers()
+    rawHeaders.split('\r\n').forEach(function(line) {
+      var parts = line.split(':')
+      var key = parts.shift().trim()
+      if (key) {
+        var value = parts.join(':').trim()
+        headers.append(key, value)
+      }
     })
-    return head
+    return headers
   }
 
   Body.call(Request.prototype)
@@ -330,10 +382,10 @@
     }
 
     this.type = 'default'
-    this.status = options.status
+    this.status = 'status' in options ? options.status : 200
     this.ok = this.status >= 200 && this.status < 300
-    this.statusText = options.statusText
-    this.headers = options.headers instanceof Headers ? options.headers : new Headers(options.headers)
+    this.statusText = 'statusText' in options ? options.statusText : 'OK'
+    this.headers = new Headers(options.headers)
     this.url = options.url || ''
     this._initBody(bodyInit)
   }
@@ -371,35 +423,16 @@
 
   self.fetch = function(input, init) {
     return new Promise(function(resolve, reject) {
-      var request
-      if (Request.prototype.isPrototypeOf(input) && !init) {
-        request = input
-      } else {
-        request = new Request(input, init)
-      }
-
+      var request = new Request(input, init)
       var xhr = new XMLHttpRequest()
 
-      function responseURL() {
-        if ('responseURL' in xhr) {
-          return xhr.responseURL
-        }
-
-        // Avoid security warnings on getResponseHeader when not allowed by CORS
-        if (/^X-Request-URL:/m.test(xhr.getAllResponseHeaders())) {
-          return xhr.getResponseHeader('X-Request-URL')
-        }
-
-        return
-      }
-
       xhr.onload = function() {
         var options = {
           status: xhr.status,
           statusText: xhr.statusText,
-          headers: headers(xhr),
-          url: responseURL()
+          headers: parseHeaders(xhr.getAllResponseHeaders() || '')
         }
+        options.url = 'responseURL' in xhr ? xhr.responseURL : options.headers.get('X-Request-URL')
         var body = 'response' in xhr ? xhr.response : xhr.responseText
         resolve(new Response(body, options))
       }