By Matt Hardy This has already been one of the most congested track and field seasons in recent history – and now it’s about to get even busier. On the back of an impressive World Championships and a superbly attended Commonwealth Games in Birmingham, the athletics circus is rolling into Munich for the European Championships, which officially start today. Although this multi-sport extravaganza – essentially several different European Championships, also including cycling, rowing and artistic gymnastics, stitched together – was introduced four years ago, this is the first time all the action wi…