v2.0.0

BREAKING: In projects using Node 16 or lower you'd need to pass the fetch implementation, or polyfill the global.fetch.

• Remove as many project dependencies as possible:
  chai -> assert
  mocha -> node:test
  node-fetch -> [optional]
  @stamp/ -> stampit
  a27a7c0

v1.0.5...v2.0.0