Update NOTICE with licenses for React and Immutable-JS
- update to release 0.45
Merge pull request #9395 from adobe/ingo/update-release

update to release 0.45
Change links to use new codemirror organization
Merge pull request #9407 from MarcelGerber/codemirror-org

Change links to use new codemirror organization
Merge remote-tracking branch 'upstream/master'