Update vanilla theme to handle loading Bergamot

Signed-off-by: Danila Fedorin <danila.fedorin@gmail.com>

content/blog/00_types_intro.md

@@ -4,11 +4,11 @@ date: 2022-06-26T18:36:01-07:00
 tags: ["Type Systems", "Programming Languages"]
 series: "Everything I Know About Types"
 draft: true
+bergamot:
+    render_presets:
+        default: "lc.bergamot"
 ---
 
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 I am in love with types and type systems. They are, quite probably,
 my favorite concept in the world. Most of us mere
 mortals use types as a way to make sure we aren't writing

content/blog/01_types_basics.md

@@ -4,11 +4,11 @@ date: 2022-06-30T19:08:50-07:00
 tags: ["Type Systems", "Programming Languages"]
 series: "Everything I Know About Types"
 draft: true
+bergamot:
+    render_presets:
+        default: "lc.bergamot"
 ---
 
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 It's finally time to start looking at types. As I mentioned, I want
 to take an approach that draws a variety of examples from the real
 world - I'd like to talk about examples from real programming

content/blog/bergamot/index.md

@@ -3,11 +3,11 @@ title: "Bergamot: Exploring Programming Language Inference Rules"
 date: 2023-12-22T18:16:44-08:00
 tags: ["Project", "Programming Languages"]
 description: "In this post, I show off Bergamot, a tiny logic programming language and an idea for teaching inference rules."
+bergamot:
+    render_presets:
+        default: "lc.bergamot"
 ---
 
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 ### Inference Rules and the Study of Programming Languages
 In this post, I will talk about _inference rules_, particularly in the field
 of programming language theory. The first question to get out of the way is