Created branch.
It seems to work. But why?
Parquet works
Can read and write with Parquet. Impressive.
Merge branch 'master' into SerializationToDisk
Merge branch 'SerializationToDisk' of https://github.com/i-am-the-slime/SparkPlayingField into SerializationToDisk
Merge branch 'SerializationToDisk'
Merge branch 'master' of https://github.com/i-am-the-slime/SparkPlayingField
Merge branch 'master' into SerializationToDisk
Added tests for Konrad's code.
Merge branch 'SerializationToDisk'