Merge pull request #795 from zeux/nextver

Release 0.22

js: Adjust simplify/simplifyWithAttributes assertions

To make ErrorAbsolute mode useful in JS, it needs to allow values
outside of 0..1 range; for simplicity we just remove the upper bound for
now.

Also, previously flags could contain values that are not recognized as
valid options and this would silently work; these are now checked with
assertions to prevent mistakes.

Update version to 0.20

Merge pull request #554 from zeux/update-node

Update versions of setup-node and upload-artifact

Merge pull request #447 from zeux/nextver

Update version to 0.18 and copyright year to 2022

js: Update meshopt_encoder.module from NPM builds

Update README.md

The previous change missed one version number due to the use of "whole
word" string search.

gltfpack: Update npm version to 0.15.1

This is to fix the I/O issue with node.js and small files.

Update README.md

Mention meshopt_optimizeVertexCacheStrip and meshopt_encodeIndexVersion.

demo: Update to three.js r111

Cloudflare has r109 as the latest version, so switch to jsdelivr.