Add some shortcodes for making the game theory post nicer.

assets/scss/gametheory.scss

@@ -0,0 +1,11 @@
+@import "variables.scss";
+@import "mixins.scss";
+
+.assumption-number {
+    font-weight: bold;
+}
+
+.assumption {
+    @include bordered-block;
+    padding: 0.8rem;
+}

layouts/shortcodes/gt_assumption.html

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+{{ $n := .Page.Scratch.Get "gt-assumption-count" }}
+{{ $newN := add 1 (int $n) }}
+{{ .Page.Scratch.Set "gt-assumption-count" $newN }}
+{{ .Page.Scratch.SetInMap "gt-assumptions" (.Get 0) $newN }}
+<div class="assumption">
+    <span id="gt-assumption-{{ .Get 0 }}" class="assumption-number">
+        Assumption {{ $newN }} ({{ .Get 1 }}).
+    </span> {{ .Inner }}
+</div>

layouts/shortcodes/gt_css.html

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+{{ $style := resources.Get "scss/gametheory.scss" | resources.ToCSS | resources.Minify }}
+<link rel="stylesheet" href="{{ $style.Permalink }}">

layouts/shortcodes/gt_link.html

@@ -0,0 +1 @@
+<a href="#gt-assumption-{{ .Get 0 }}">assumption {{ index (.Page.Scratch.Get "gt-assumptions") (.Get 0) }}</a>