Extract latest year from World Bank data for Maps
World Bank shading data
Convert the Excel files to CSV
More data

Add Consumption and Emissions datasets from Glen Peters,
and add alpha-2 codes to the World Bank datasets.
Fix bug that prevented Maps/Population being alpha-2ed
Alpha-2 encode Consumption and Emissions
Compute per capita emissions
Start to process the BP data
Conversion factors
Finish data update
Merge branch '2014-update'