last modified plugin

Gemfile

@@ -6,4 +6,5 @@ gem 'jekyll', '3.8.5'
 group :jekyll_plugins do
   gem "jekyll-paginate-v2", "~> 1.7"
   gem 'jekyll-sitemap'
+  gem 'jekyll-last-modified-at'
 end

Gemfile.lock

@@ -9,7 +9,7 @@ GEM
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
-    ffi (1.10.0)
+    ffi (1.11.1)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
@@ -27,13 +27,16 @@ GEM
       pathutil (~> 0.9)
       rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
+    jekyll-last-modified-at (1.1.0)
+      jekyll (>= 3.7, < 5.0)
+      posix-spawn (~> 0.3.9)
     jekyll-paginate-v2 (1.9.4)
       jekyll (~> 3.0)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
-    jekyll-sitemap (1.2.0)
+    jekyll-sitemap (1.3.1)
-      jekyll (~> 3.3)
+      jekyll (>= 3.7, < 5.0)
-    jekyll-watch (2.1.2)
+    jekyll-watch (2.2.1)
       listen (~> 3.0)
     kramdown (1.17.0)
     liquid (4.0.3)
@@ -44,14 +47,15 @@ GEM
     mercenary (0.3.6)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.3)
+    posix-spawn (0.3.13)
+    public_suffix (3.1.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
-    rouge (3.3.0)
+    rouge (3.8.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.5)
-    sass (3.7.3)
+    sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -62,8 +66,9 @@ PLATFORMS
 
 DEPENDENCIES
   jekyll (= 3.8.5)
+  jekyll-last-modified-at
   jekyll-paginate-v2 (~> 1.7)
   jekyll-sitemap
 
 BUNDLED WITH
-   2.0.1
+   2.0.2

_config.yml

@@ -40,6 +40,7 @@ collections:
 plugins: 
   - jekyll-paginate-v2
   - jekyll-sitemap
+  - jekyll-last-modified-at
   
 # defaults
 

_includes/SEO.html

@@ -148,7 +148,7 @@
     "inLanguage": "en_us",
     "headline": "an online radio station from Rotterdam",
     "dateCreated": "2017-02-13T15:11:10+0000",
-    "dateModified": "2018-01-15T16:11:48+0000",
+    "dateModified": "{{ page.last_modified_at | date_to_xmlschema }}",
     "datePublished": "2017-02-19T12:28:36+0000",
     "copyrightYear": "2017",
     "author": {

_includes/highlightmetahead.html

@@ -11,7 +11,7 @@
 
   <!-- Standard SEO -->
   <meta name="title" content="{{ page.title }}, {{ site.title }}">
-  <meta name="dc.date.modified" scheme="ISO8601" content="{{ site.time | date_to_xmlschema }}" />
+  <meta name="dc.date.modified" scheme="ISO8601" content="{{ page.last_modified_at | date_to_xmlschema }}" />
   <meta name='robots' content='index'/>
   <meta charset="utf-8" />
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
@@ -176,7 +176,7 @@
       "inLanguage": "en_us",
       "headline": "{{ site.tagline }}",
       "dateCreated": "{{ page.date }}",
-      "dateModified": "{{ site.time | date_to_xmlschema }}",
+      "dateModified": "{{ page.last_modified_at | date_to_xmlschema }}",
       "datePublished": "{{ page.date }}",
       "copyrightYear": "{{ site.time | date: "%Y" }}",
       "author": {

_includes/metahead.html

@@ -9,7 +9,7 @@
   <title>{{ page.title }} | {{ site.title }}</title>
   <!-- Standard SEO -->
   <meta name="title" content="{{ page.title }}, {{ site.title }}">
-  <meta name="dc.date.modified" scheme="ISO8601" content="{{ site.time | date_to_xmlschema }}" />
+  <meta name="dc.date.modified" scheme="ISO8601" content="{{ page.last_modified_at | date_to_xmlschema }}" />
   <meta name='robots' content='index'/>
   <meta charset="utf-8" />
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
@@ -171,7 +171,7 @@
       "inLanguage": "en_us",
       "headline": "{{ site.tagline }}",
       "dateCreated": "{{ page.date }}",
-      "dateModified": "{{ site.time | date_to_xmlschema }}",
+      "dateModified": "{{ page.last_modified_at | date_to_xmlschema }}",
       "datePublished": "{{ page.date }}",
       "copyrightYear": "{{ site.time | date: "%Y" }}",
       "author": {

_includes/releasemeta.html

@@ -11,7 +11,7 @@
 
   <!-- Standard SEO -->
   <meta name="title" content="{{ page.title }}">
-  <meta name="dc.date.modified" scheme="ISO8601" content="{{ site.time | date_to_xmlschema }}" />
+  <meta name="dc.date.modified" scheme="ISO8601" content="{{ page.last_modified_at | date_to_xmlschema }}" />
   <meta name='robots' content='index'/>
   <meta charset="utf-8" />
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

googleee413c3e3c78de29.html

@@ -1 +1,4 @@
+---
+sitemap: false
+---
 google-site-verification: googleee413c3e3c78de29.html