Prepare for release of 5.7.0
Prepare for release of 5.7.0

ninjaframework/ninja,ninjaframework/ninja,ninjaframework/ninja,raphaelbauer/ninja,fizzed/ninja,raphaelbauer/ninja,raphaelbauer/ninja,fizzed/ninja,bazi/ninja,fizzed/ninja,jlannoy/ninja,fizzed/ninja,jlannoy/ninja,bazi/ninja,jlannoy/ninja,ninjaframework/ninja,bazi/ninja,jlannoy/ninja,raphaelbauer/ninja