Merge pull request #504 from oddbird/broken-links

Fix broken links

content/blog/2013/isolation-susy.md

@@ -17,7 +17,7 @@ summary: |
   help you manage the worst effects of [sub-pixel rounding], while
   `bleed()` helps you break items out of the box.
 
-  [sub-pixel rounding]: https://www.palantir.net/blog/responsive-design-s-dirty-little-secret
+  [sub-pixel rounding]: https://web.archive.org/web/20230330021053/https://www.palantir.net/blog/responsive-design-s-dirty-little-secret
 date: 2013-03-20
 ---
 
@@ -69,7 +69,7 @@ are positioned absolutely.
 
 [sub-pixel rounding]: https://johnresig.com/blog/sub-pixel-problems-in-css/
 [demo]: https://johnalbin.github.io/fluid-grid-rounding-errors/
-[solution]: https://www.palantir.net/blog/responsive-design-s-dirty-little-secret
+[solution]: https://web.archive.org/web/20230330021053/https://www.palantir.net/blog/responsive-design-s-dirty-little-secret
 [isolate any grid element in susy]: https://susy.readthedocs.io/susyone/#isolation
 
 ## Isolation Grid

content/blog/2017/git-rebase.md

@@ -32,7 +32,7 @@ later.
 Now that you have enough links to take you away from this post for a day
 at least, let's get started.
 
-[many]: https://grimoire.ca/git/pull-request-workflow/
+[many]: https://web.archive.org/web/20220628061111/https://grimoire.ca/git/pull-request-workflow/
 [ways]: https://nvie.com/posts/a-successful-git-branching-model/
 [to]: https://www.atlassian.com/git/tutorials/comparing-workflows
 [use]: https://git-scm.com/book/en/v2/Git-Branching-Branching-Workflows
@@ -249,7 +249,7 @@ your git history often to understand past choices, then let this be your
 excuse.
 
 [reflog]: https://git-scm.com/docs/git-reflog
-[Owen]: https://grimoire.ca/git/config/
+[Owen]: https://web.archive.org/web/20231004103417/https://grimoire.ca/git/config/
 [good commit messages]: https://alistapart.com/article/the-art-of-the-commit/
 
 ## What Do the OddBirds Do?

content/blog/2017/susy3.md

@@ -54,7 +54,7 @@ later, it had become the inspiration for an entire genre of Sass grid
 systems – with several creative adaptations like [Singularity] to keep
 us on our toes.
 
-  [Blueprint]: http://www.blueprintcss.org/
+  [Blueprint]: https://github.com/joshuaclayton/blueprint-css
   [Eric Meyer’s Reset]: https://meyerweb.com/eric/tools/css/reset/
   [Carl]: /authors/carl/
   [Jonny]: /authors/jonny/

content/tools/helium.md

@@ -3,7 +3,6 @@ title: Helium
 sub: A Floating Browser Window for OS X
 date: 2015-10-16
 links:
-  site: https://heliumfloats.com/
   source: https://github.com/JadenGeller/Helium
 author: kit
 oss: contributor