All Tomorrow’s Parties have announced that Jabberwocky festival, set to take place this weekend, has been cancelled. Neutral Milk Hotel (above) James Blake, Darkside, Caribou and more were set to perform at the two-day London event. In a post on their Facebook page, ATP founder Barry Hogan wrote “It is with deep sadness we regret to inform everyone that as of today Tuesday 12th August 2014, ATP is being forced into cancelling this weekend’s Jabberwocky festival. Refunds will be available to all customers at the point of purchase. We have put everything into promoting Jabberwocky, and despite healthy ticket sales;…