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.

gltfpack: Fix bufferView alignment

Instead of aligning *after* the offset for a buffer view was computed,
we now align each chunk that is written to the binary. This makes sure
that the start of the next chunk as well as the entire resulting buffer
is 4b aligned.

Update version to 0.11

Update library version to 0.10

Update version to 0.9

Bump version to 0.8

Bump version to 0.7