message: fixed ccp4 spec stub
diff: import CCP4 from '../ccp4/parser'
  import { FileHandle } from '../../common/file-handle';
  -const ccp4Buffer = new Uint8Array([])
  +const ccp4Buffer = new Uint8Array(4 * 64)
  describe('ccp4 reader', () => {
  it('basic', async () => {
  