Add Oliver Tonnhofer to Contributors; update Features/Future
Add Oliver Tonnhofer to Contributors; update Features/Future

flynn/pq,jnewmano/pq,beni55/pq,everalbum/pq,johto/pq,stvp/pq,bugreplaydev/pq,ympons/pq,lib/pq,amaniak/pq,StabbyCutyou/pq,cbandy/go-pq,henrylee2cn/pq,bugreplaydev/pq,springning/pq,ScriptRock/pq,ympons/pq,calebthompson/pq,sammi/pq,jnewmano/pq,erichnascimento/pq,dongzerun/pq,VividCortex/pq