Stephane Nicoll 604b0891d0 Use asciidoctor 1.5.8
This commit uses asciidoctor 1.5.8 for the time being. Once a new
version of the plugin is released, this override will be unnecessary.
2019-03-29 15:35:45 +01:00
..
2019-03-29 15:35:45 +01:00