update to the latest meshcat js

[rdeits]

Includes meshcat-dev/meshcat#58 and meshcat-dev/meshcat#60

[codecov-io]

Codecov Report

Merging #123 into master will increase coverage by 3.25%.
The diff coverage is 33.33%.

@@            Coverage Diff            @@
##           master    #123      +/-   ##
=========================================
+ Coverage   76.04%   79.3%   +3.25%     
=========================================
  Files          14      15       +1     
  Lines         405     459      +54     
=========================================
+ Hits          308     364      +56     
+ Misses         97      95       -2

Impacted Files	Coverage Δ
src/visualizer.jl	73.23% <33.33%> (+3.9%)	⬆️
src/util.jl	100% <0%> (ø)
src/MeshCat.jl	33.33% <0%> (+2.89%)	⬆️
src/animations.jl	80.85% <0%> (+4.66%)	⬆️
src/atframe.jl	82.35% <0%> (+5.21%)	⬆️

---

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[rdeits]

Blocked by JuliaGizmos/WebIO.jl#337 🙁

[tkoolen]

Also blocked by #115 (comment), sorry.

[tkoolen]

Fix for #115 (comment) in #124.

[tkoolen]

JuliaLang/MbedTLS.jl#208

[rdeits]

I think the "explicit requirement" that is restricting MbedTLS to an incompatible version must be coming from the Manifest.toml. It's likely that there isn't a single Manifest.toml that will give compatible versions for Julia 1.0, 1.1, and 1.2, so perhaps this is a case where being over-cautious by storing the Manifest is not helping. I'm going to try just removing the Manifest from the repo to see if that gets things working again.

[rdeits]

There's still something wrong here. The test/visualizer.jl tests are supposed to render the same scene in a browser window and a Blink window, but now the browser websocket connection closes and doesn't render anything. There might be something broken in the Mux integration. Boo.

[rdeits]

This might be JuliaGizmos/WebIO.jl#343

[tkoolen]

Ah, I guess I was working around that issue with 1108156. This is quite the saga.

[rdeits]

Given that things are subtly broken in master (ref #127 ) and this is a step in the right direction, I'm going to merge this PR and then work on things from there.