Bump version to 0.8.18
Bump version to 0.8.18

Dynflow/dynflow,Dynflow/dynflow,dLobatog/dynflow,adamruzicka/dynflow,dLobatog/dynflow,dLobatog/dynflow,adamruzicka/dynflow,Dynflow/dynflow,dLobatog/dynflow,adamruzicka/dynflow,adamruzicka/dynflow,Dynflow/dynflow