feat: add basic features

Add rendering of dot, plantuml, pikchr, roadmap, and raw SVG, from
fenced code blocks into SVG.

Sponsored-by: pep.foundation

1 files changed, 460 insertions, 0 deletions

diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..1c1ef48
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,460 @@
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