message: Bump version for v19.2.0 beta 1.
diff: {
  "name": "blockstack",
  - "version": "19.1.0",
  + "version": "19.2.0-beta.1",
  "description": "The Blockstack Javascript library for authentication, identity, and storage.",
  "main": "lib/index",
  "unpkg": "dist/blockstack.js",
  