Merge branch 'master' into 'master'

Add documentation about the state parameter

See merge request !46
1 job from master in 16 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
failed #1572
pages

00:16

 
Name Stage Failure
failed
pages Test

Updating/initializing submodules recursively...
$ hugo
Building sites … ERROR 2019/07/08 19:24:37 Failed to read Git log: Git executable not found in $PATH
WARN 2019/07/08 19:24:38 .File.Path on zero object. Wrap it in if or with: {{ with .File }}{{ .Path }}{{ end }}
WARN 2019/07/08 19:24:38 make non-relative ref/relref page reference(s) in page %q absolute, e.g. {{< ref "/blog/my-post.md" >}}
Error: Error building site: logged 1 error(s)
Total in 164 ms
ERROR: Job failed: exit code 255