Updated SFF-BSFA mini-convention guest list history

[owlfish]

2002 SFF: M. John Harrison, BSFA: Gwyneth Jones
2003 SFF: Kim Newman, BSFA: Ian Watson
2004 SFF: Alastair Reynolds, BSFA: Paul McAuley. Also, Liz Williams.
2005 SFF: Karen Traviss, BSFA: Ian McDonald
2006 SFF: Steven Baxter, BSFA: Juliet McKenna. Also, Bruce Sterling.
2007 SFF: Francis Spufford, BSFA: Jon Courtenay Grimwood
2008 SFF: Geoff Ryman, BSFA: Peter Weston
2009 SFF: Paul Kincaid, BSFA: Nick Harkaway
2010 SFF: Rob Shearman, BSFA: Malcolm Edwards
2011 SFF: Mike Ashley, BSFA: Tricia Sullivan
2012 SFF: Aliette de Bodard, BSFA: Marek Kukula
2013 SFF: Gaie Sebold, BSFA: Ben Aaronovitch
2014 SFF: Jo Fletcher, BSFA: Frances Hardinge
2015 Brian Aldiss, Pat Cadigan (joint SFF-BSFA guests)