bump v10.1.2

bump v10.1.1; (chore) add changelog for 10.1.1

(chore) bump copyright

pull in get/set fix, bump to 10.0.3

pin 10.0.2

version bump to 10.0.1

(docs) there is a single AUTHORS file now

(chores) minor cleanups and chores for v10 release/beta (highlightjs#…

…2447)

* update docs
* readme links to upgrade docs
* build the version # into the distributable
* clean up linter warnings
* mention v10 upgrade doc

release 9.18.1

release 9.18.0