updating structure to use d3 style update add delete
working on rendering pathway using correct d3 methods
successfully getting display working using d3 methods
both scalable and nonscalable shapes are working at the proof of concept level
now getting shapeType instead of hard-coding in just 'roundedRectangle'
updated to handle uniform and nonuniform scaling for shapes
Merge pull request #28 from khanspers/gh-pages

changes to panzoom css and details frame css, and pathvisio-js.html
reworked data model, got more of the pathway elements being displayed and re-enabled details frame
merge
highlight by label working
details frame and node highlighter both working (without full error handling)
updated test and development page to show pathvisio.js dev version side-by-side with current WP viewer widget
minor updates to test/dev page
Merge pull request #17 from wikipathways/gh-pages

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