What went through Jonathan Meiburg’s head when, in 2008, he formally left critical darlings Okkervil River?  I’d be willing to wager either a sense of duty or a feeling of dread; a now or never sort of thing that only he could truly understand.  Sure, his band Shearwater was gaining fans every day.  Signing a contract with indie giants Matador couldn’t hurt either, but it couldn’t have been easy.