Extending the Earlybird deadline to 29 May

Somewhere along the way, the deadline for notifications to Authors of the Shared LinuxCon/Plumbers track got pushed out by a week to 25 May.  In the light of that, we’re extending the deadline for Earlybird registration to Friday 29 May to allow anyone who doesn’t get a talk accepted but who still wishes to attend Plumbers to take advantage of the Earlybird registration rate.