Comments tweak
Add warning if using IE
Enable sorting by arbitrary columns from a TSV file
Document the pan.strains file
Add colouring
Add a colour legend
Fix typo
Better handling of missing strain info
Update gitignore for pan.strains
A rough, but working dendrogram prototype
Integrate dendrogram into main page.  WIP
Attempt to colour dendrogram labels.  Needs work...
Remove unused css
Make the options panel prettier
Fix test code
Make it possible to select the method for clustering
Speed up distance matrix calculation since it's symmetric
Partially working radial dendrogram.  Ugly, needs refactoring
Update gitignore
Basic tree tooltip