This way we can have a handle of the errors in the high-level
components. Before they were implicitly discarded.

Also, spago build used now.

Not everything compiles yet.

Use thisModule everywhere.

This hides the explicit 'key' prop in App, moves it to the individual
components.

listId, limit are required params for all charts.
(corpusId, listId) is the required pair for chart generation, see
#180 (comment 2466)

This could be more performant than Array. We don't do random access,
only filtering.