mosesckim

For reference, global indices computed for PH, MM, and TL after recode processing for water, toilet, and floor. https://colab.research.google.com/drive/1oA9OxL9_qMeylaCi3WA1NSSDtwky3a16?usp=sharing

enhancement request: add asset index computation result as additional column to original data frame https://github.com/thinkingmachines/geowrangler/blob/master/geowrangler/dhs.py#L144