Documentation
The UI is not very intuitive, needs documenting
Initial thoughts here:
Table page is probably not worth documenting (throws pretty much all available data at the user).
Otherwise, I think most pages UI is fairly intuitive, since you select checkboxes and click submit to view data.
The only surprising thing I can recall is that you might input 2016-08-02 but get data starting at 2016-08-01, for example, if that's the closest date. (This specific situation might not actually be possible due to the intricacies of how binary_search works, but I think it's similar enough to be representative).
If this is still an issue, I think triaging as P-medium if not P-high is a good idea, since if people don't know how to use the UI, adding more features certainly won't help.
Other than the date inputs on the graph page not always producing the date range requested due to data being unavailable, I think this is mostly resolved. I think exposing the commit hash of the left/right bounds and the associated date is a good start, and we can add a tooltip to that if the date isn't equivalent to the inputted date.