Publish 1.2.0 updates

[tiesont]

This is an issue to allow tracking the status of releases for 1.2.0.

• Publish release on Github
• Update npm
• Update cdnjs

[tiesont]

Updating cdnjs looks like it's going to be an issue: cdnjs/cdnjs#13524

Will update when I get any feedback on the npm package.

[tiesont]

@danielfarrell Would it be possible to grant me some sort of admin/collaborator rights for https://www.npmjs.com/package/@danielfarrell/bootstrap-combobox? npm username is tiesont. That would let me sync npm to the release version here and on cdnjs.