feat: Flat import of markdown repo

This is a flat (without history) import of (some of) the content
from our markdown module.

We've imported this without history because the repo contains our
blog posts and showcases posts content prior to porting them to strapi.

Since this contains many images, it would balloon the size of this repo
to import the full history.

Instead, please refer to the history of the (archived) markdown repo
at: https://github.com/freesewing/markdown

markdown/dev/howtos/code/dependencies/en.md

@@ -0,0 +1,39 @@
+---
+title: Part dependencies
+for: developers
+about: Shows you how to create dependencies between pattern parts
+---
+
+Part dependencies are set in the [pattern configuration](/config), and
+control the order in which parts are drawn. FreeSewing will make sure
+that before drafting a part, it will first draft all its dependencies.
+
+Let's look at an example:
+
+```js
+dependencies: {
+  front: "base",
+  back: "base",
+  sleeve: ["front", "back"]
+}
+```
+
+This could be from a T-shirt pattern where the `front` and `back` patterns are very similar, 
+so they both are inheriting a `base` part.
+In addition, the `sleeve` part needs to be drafted after the `front` and `back` part because
+in `front` and `back` we store the length of the armhole seam in the [store](/api/store) and
+we need that info to fit the sleevecap to the armhole.
+
+Now if a user requests to draft only the `sleeve` part, FreeSewing will still draft:
+
+ - First the `base` part
+ - Then the `front` and `back` parts
+ - Finally the `sleeve` part
+
+but it will only render the `sleeve` part, as that's the only thing the user requested.
+
+<Note>
+
+For inheriting parts, please refer to [part inheritance](/howtos/core/inject/).
+
+</Note>