* Introduce Unit Testing
GEOMETRIES
* Ternary heatmap: http://stackoverflow.com/questions/26221236/ternary-heatmap-in-r/33021871#33021871
* Ternary Tie Lines / Phase Equilibria, as per blog request: http://www.scielo.br/img/fbpe/bjce/v19n2/10666f2.gif
