John enabled the sample search functions for x,y position and composition.  Also added visualization of plate map and compositional space.  I'm just pushing the code up.
rebase with mistress
Merge branch 'master' into mistress
Merge branches 'mistress' and 'mistress' of https://github.com/johnmgregoire/JCAPPlatemapVisualize
removed *.pyc files
added capability of choosing the stacking element for stacked composition plots
added capability of clicking on stacked ternary to view/add/remove samples
deleted unnecessary files, added license and readme
fix typo and change working directory to get out of python code directories