Update migration, fix various minor issues

- Lot of people couldn't migrate to v1 and plan to reevaluate when v2 is
  released.
- It's "npm" not "NPM". It doesn't stand for anything, and it never
  has - it was initially chosen simply because it was easy to type.
  It has a lot of unofficial backronyms with "Node Package Manager"
  being one of the most common ones, but it's never officially stood
  for anything as an acronym *or* initialism.
- Fixed a few errors in the change log, like non-breaking changes being
  included in the "Breaking Changes" section and an inaccuracy in the
  summary of a particular change.
- Fixed RawGit URLs to point to GitHack, which is a lighter proxy that
  offloads caching to Cloudflare instead of also implementing it itself.
  (It also just uses nginx for all the important server logic, so it
  scales better.)
- Add a few more v0.2 references as appropriate

test-utils/domMock.js

@@ -20,7 +20,7 @@ module.exports = function(options) {
 	var spymap = []
 
 	// This way I'm not also implementing a partial `URL` polyfill. Based on the
-	// regexp at http://urlregex.com/, but adapted to allow relative URLs and
+	// regexp at https://urlregex.com/, but adapted to allow relative URLs and
 	// care only about HTTP(S) URLs.
 	var urlHash = "#[?!/+=&;%@.\\w_-]*"
 	var urlQuery = "\\?[!/+=&;%@.\\w_-]*"