Use cobalt-builtin excerpt method

_cobalt.yml

@@ -1,9 +1,6 @@
 source: "./"
 destination: _site
 include_drafts: false
-default:
-  excerpt_separator: "<!-- more -->"
-  is_draft: false
 pages:
   default: {}
 posts:

_posts/2021-09-17-glean-geckoview.md

@@ -8,10 +8,10 @@ data:
   tags:
     - mozilla
     - rust
-  synopsis: |
-    It took us several more weeks to put everything into place,
-    but we're finally shipping the Rust parts of the Glean Android SDK with GeckoView
-    and consume that in Android Components
+excerpt: |
+  It took us several more weeks to put everything into place,
+  but we're finally shipping the Rust parts of the Glean Android SDK with GeckoView
+  and consume that in Android Components.
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2021-11-01-buggy-glean-and-a-data-incident.md

@@ -8,11 +8,11 @@ data:
   tags:
     - mozilla
     - rust
-  synopsis: |
-    Shortly after we shipped Glean through GeckoView in a Fenix Nightly release
-    we received a crash report pointing to code that we haven't touched in a long time.
-    And yet the change of switching from a standalone Glean library
-    to shipping Glean in GeckoView uncovered a crashing bug, that quickly rose to be the top crasher for Fenix for more than a week
+excerpt: |
+  Shortly after we shipped Glean through GeckoView in a Fenix Nightly release
+  we received a crash report pointing to code that we haven't touched in a long time.
+  And yet the change of switching from a standalone Glean library
+  to shipping Glean in GeckoView uncovered a crashing bug, that quickly rose to be the top crasher for Fenix for more than a week.
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2021-12-17-glean-in-2021.md

@@ -7,11 +7,11 @@ data:
   route: blog
   tags:
     - mozilla
-  synopsis: |
-    A year ago I posted Glean in 2021 as a way to look into the future
-    and set out a vision and plan for the project.
-    Today I'm looking back at 2021, if we were able to follow up on my plans back then
-    and look at all the other things we did for Glean
+excerpt: |
+  A year ago I posted Glean in 2021 as a way to look into the future
+  and set out a vision and plan for the project.
+  Today I'm looking back at 2021, if we were able to follow up on my plans back then
+  and look at all the other things we did for Glean.
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2021-12-31-2021-in-many-words.md

@@ -5,10 +5,10 @@ published_date: "2021-12-31 23:59:59 +0100"
 layout: post.liquid
 data:
   route: blog
-  synopsis: |
+excerpt: |
     It has become a tradition for me to look at the year that's about to end.
     I did so in 2020, 2019, 2018, 2017, 2016, 2015 and 2014.
-    Let's look at 2021 now
+    Let's look at 2021 now.
 ---
 
 It has become a tradition for me to look at the year that's about to end.

index.liquid

@@ -25,11 +25,7 @@ data:
   {%- endfor %}
   {%- endif -%}
   </div>
-  {%- if post.data and post.data.synopsis %}
-  <p>{{ post.data.synopsis | strip}}…</p>
-  {%- else %}
-  <p>{{ post.content | strip_html | truncatewords: 50, '…' }}</p>
-  {%- endif -%}
+  <p>{{ post.excerpt }}</p>
 </article>
 
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