Change addon name to Firefox Interest Dashboard.
Make tooltips suck less.
Add back button for area graph.
Update package.json.
Fix paging bug caused by an id mapping to multiple dates in HistoryReader.
Group history entries before passing data to the UI; also keeping track of counts.
Reset paging when a category is collapsed.
Show date header in timeline for pages that start with a new date.
Timestamps are unique per history visit. Use them instead of IDs so we can have a more accurate sort of history entries.
Replace line between timeline nodes when loading next page and don't repeat entries in the last page.
Change colors according to active slice.
Escape html tags in visit titles.
Add weekdays to tooltips.