Use mdbook@0.5.1 and mdbook-mermaid@0.17.0

[jdm]

Our deploys are busted again.

[delan]

hmm, this looks like an unstable release, even though it’s marked as latest, and there are breaking changes. i wonder if we should make the workflow consider only stable releases instead, and wait until 0.5.0 is out before migrating?

[delan]

something like this: f4f24f6

[jdm]

I have to say I really dislike the current system that insists we always have to use the latest version available.

[jdm]

something like this: f4f24f6

I'd be fine with this to get deploys unblocked.

[delan]

I have to say I really dislike the current system that insists we always have to use the latest version available.

tbh i think i would also prefer just pinning some specific version, and updating whenever we feel like it: 801d0bd

[delan]

i’ve opened #156 :)

[mrobinson]

I've gone ahead and finished the upgrade here as mdbook 0.5 is stable now. @jdm, if this looks good to you, feel free to land it.