NPM published versions 2.0.0alpha1-2.0.0alpha4 are not installable, because modern npm requires the version id to be in the form of 2.0.0-alpha4

[keskival]

This breaks lots of packages depending on this, including but not limited to markx, for example:
https://github.com/jgallen23/markx/blob/master/package.json#L18
Modern npm changes this to 2.0.0-alpha4, which results in:
For npm 2.13.2:
"npm ERR! version not found: resistance@2.0.0-alpha4"
For npm 3.3.8:
"npm ERR! Invalid Version: 2.0.0alpha4"

Please publish to npm using - as the delimiter for extra version info.