Bump version to 1.6.1

2 jobs for 1.6.1 in 4 minutes and 23 seconds (queued for 1 minute and 19 seconds)
latest
Status Job ID Name Coverage
  Build
passed #5156
autoscale-linux
linux

00:02:18

passed #5157
openswift xcodeselect8
osx

00:02:04