Switch Lerna to publish in "independent mode" (#1691)
Switch Lerna to publish in "independent mode" (#1691)

https://github.com/lerna/lerna#independent-mode---independent

Before we were bumping every package release to the same version which
didn't make sense. A small bug fix on one package isn't the same as a
minor release on another.

The main thing that matters is the major version but independent mode is
neater.
Khaledgarbaya/gatsby,fk/gatsby,danielfarrell/gatsby,gatsbyjs/gatsby,fabrictech/gatsby,fabrictech/gatsby,Khaledgarbaya/gatsby,0x80/gatsby,mingaldrichgan/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,mickeyreiss/gatsby,mickeyreiss/gatsby,ChristopherBiscardi/gatsby,mickeyreiss/gatsby,fk/gatsby,danielfarrell/gatsby,gatsbyjs/gatsby,mingaldrichgan/gatsby,ChristopherBiscardi/gatsby,0x80/gatsby,gatsbyjs/gatsby,chiedo/gatsby,0x80/gatsby,fk/gatsby,chiedo/gatsby,chiedo/gatsby,gatsbyjs/gatsby,fabrictech/gatsby,ChristopherBiscardi/gatsby,danielfarrell/gatsby,gatsbyjs/gatsby,mingaldrichgan/gatsby,Khaledgarbaya/gatsby