v0.1.0

The first release.

• Install with npm install -g @nohead/cli, or run npx nohead. It talks to
  https://api.nohead.io unless --api-url or NOHEAD_API_URL says
  otherwise.
• nohead login (named profiles; at a terminal it reads the key without
  echoing it), whoami, health.
• Collections, fields, migrations, records (history, revision, diff, revert,
  bulk, import/export as JSON Lines), drafts (create, update, merge now or on
  a schedule, discard), assets (assets update --filename --alt renames one
  and sets its alt text), search, webhooks, audit.
• Schema as code (schema pull, diff, push) and project export/import,
  drafts and assets' alt text included. A push puts fields in the file's
  order with one reorder, after adding new ones.
• --json output, stable exit codes (0-4), retries for rate limits and
  transient failures.
• assets url <id> builds a rendition URL from the image's image_url, with
  no request for it; --json prints { "url": ... }.
• collections create --public-search and
  collections update --[no-]public-search include a collection in public
  search or remove it; collections search-index shows the index's name. Schema files carry it
  (public_search: true), so schema push and project export/import keep it.