infra: upgrade three.js to r104 from r77

[stephanwlee]

Notable changes:

• Vertex shader require related glsl code block
• other API changes in between
• WebGLRenderer.render no longer takes 4 inputs. Instead, you must set
  renderTarget manually.
• BufferAttribute.prototype.count is important and attribute.array is
  discourage in favor of setArray

Notable no changes:

• Types are not updated.
  • DefinitelyType no longer provide the latest
    typing of three in favor TypeScript in three.js repo. For the time
    being, we have decided not to pursue this as downloading the archive
    would fetch unnecessarily large file (examples dir is 300+MB).
  • Types in newer DefinitelyTyped and three.js seem to be incompatible
    with current build system. stephanwlee@daa35e4

Detailed steps to verify changes work correctly (as executed by you)

Poked around projector, what-if, and mesh plugins thoroughly.

[wchargin]

Wonderful! Thanks. One inline.

downloading the archive would fetch unnecessarily large file (examples
dir is 300+MB)

But https://registry.npmjs.org/three/-/three-0.104.0.tgz is 4.2MB and
includes individual .d.ts files, so that’s an option. It might require
a bit of BUILD work (à la Plottable), though, so no action required
in this commit.

[stephanwlee]

@wchargin updated the PR message. Another typing issue that I faced is captured in this branch: stephanwlee@daa35e4. Both projector code and facets code need to be updated to work with the new type changes which I think should be done in a separate PR.

(I didn't know how to share my code in more permanent way but I will keep my branch around for awhile)

[wchargin]

Types in newer DefinitelyTyped and three.js seem to be incompatible
with current build system.

We should be able to fix this by upgrading TypeScript from 2.7.2 to 3.5,
and then passing the --allowUmdGlobalAccess compiler flag:

• Consider allowing access to UMD globals from modules microsoft/TypeScript#10178
• Add flag to allow access to UMD globals from modules microsoft/TypeScript#30776
• https://devblogs.microsoft.com/typescript/announcing-typescript-3-5/#the---allowumdglobalaccess-flag

Again, no action required in this commit.

(I didn't know how to share my code in more permanent way but I will
keep my branch around for awhile)

I generally copy the diff or patch (git format-patch -1 HEAD) into a
Gist, which you can store indefinitely.

[stephanwlee]

Didn't know about the TypeScript 3.5 changes. Thanks for that. I will consider upgrading that in the future.