as initiated in IRkernel/IRkernel#82, there’s the question if we should use a dedicated class or not.

pro:

• repr objects are easily handled and identified

• we can create repr objects that will be passed unaltered. e.g. inside of a list or a dataframe

  …but that would only work for one format. therefore, to support prettyprinting of own classes, we’ll have to use custom classes with several repr_* methods to support multiple formats, anyway.

con:

• it messes with our implemention of the kernel using jsonlite

  …but that’s a very specific problem.

outlook

maybe create multi-repr objects that can be used for unaltered passing in dataframes?