Add Morocco to the data

[robertocarroll]

Currently we only have data Western Sahara with the ISO3 code ESH:

{
    "id": "ESH",
    "name": "MOROCCO / WESTERN SAHARA",
    "since": "",
    "executions": "0",
    "death-penalties": "9",
    "status": "ABOLITIONIST IN PRACTICE"
  }

Morocco's ISO3 code is MAR and we need an entry for each year for this. At the moment Morocco doesn't do anything because it doesn't have an entry.

[robertocarroll]

Two separate shapes but both called MOROCCO / WESTERN SAHARA

[robertocarroll]

Closing see #56