Allow use of Views Bulk Operations 3.x-dev branch

Just working on a VBO + Views Bulk Edit site.

There are features in VBO 3.x-dev that I need for my site. However Views Bulk Edit's composer.json has a hard depenency against "~1.0 | ~2.0":

  "require": {
    "drupal/views_bulk_operations": "~1.0 | ~2.0"
  },

I've done some preliminary testing (hacking in VBE 2.x-dev against VBO 3.x-dev) and everything appears to work well. But it would be ideal if it would be an accepted configuration for composer, even if only for dev.

I'm not sure what the protocol is here. Does VBO need an alpha release before VBE can consider permitting it as a requirement?

Also not sure what that new requirement should look like, or I'd whip up a quick patch.