The latest released version of the documentation is 0.996.3.
Other available versions:
0.996.3
0.996.2
0.996.1
0.996.0
0.995.1
0.995.0
0.994.0
0.993.0
0.992.2
0.992.1
0.992.0
0.991.0
0.990.1
0.990.0
0.18.1
0.18.0