Merge branch 'statement-dataset-release' into 'master'

First announcement of statement dataset

See merge request !8
1 job for master in 2 minutes and 27 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Deploy
failed #1533
deploy_staging

00:02:27

 
Name Stage Failure
failed
deploy_staging Deploy
            Source: /builds/SIGMathLing/website
Destination: _site
Incremental build: disabled. Enable with --incremental
Generating...
Error: could not read file /builds/SIGMathLing/website/_posts/2019-28-29-statement-classification-dataset.md: Invalid date '2019-28-29': Document '_posts/2019-28-29-statement-classification-dataset.md' does not have a valid date in the filename.
ERROR: YOUR SITE COULD NOT BE BUILT:
------------------------------------
Invalid date '2019-28-29': Document '_posts/2019-28-29-statement-classification-dataset.md' does not have a valid date in the filename.
ERROR: Job failed: exit code 1