Huge history

[edemaine]

• [ ] Scroll wheel or pinch to zoom to zoom into a subrange of history, so that you can actually target a range [like Chrome's Performance tab]
• [ ] Drag to select range between two versions to display diff (#11)
• [ ] Filter history for edits by a particular person -- toggle could be on the history tooltip where the username is already displayed
• [ ] Replace history subscription with history fetch method (i.e. make nonreactive) for performance
• [ ] Buttons to go to previous/next version of a message in History view
• [ ] Don't show all of them when too many so interface is reasonable... show more nearer in time? [Jason]
• [ ] Performance for large history? At least show when still loading data.
• [ ] Drag over timeline to present a zoomed timeline just below (repeatable or just one level deep?) [like Chrome's Performance tab]
• [x] Toggle between all edits and just commit edits (#28)

Related to #28 (commit) and #11 (diff over history)

[jbosboom]

How about something like the reputation graph on Stack Overflow, where you select a time window to zoom into? (I recall we also saw this in the Firefox and Chrome website profilers.)

Regarding the lots-of-small-changes issue, we should condense strings of edits with a larger quiescence period (1 minute?) when zoomed out, turning them into one taller line showing the total edit size of that edit string, and only show individual revisions when zoomed in. Even when zoomed in, I'd still like quiescent revisions to be highlighted in some way, as those more closely correspond to commits in traditional version control systems.

[diomidov]

The timeline slider doesn't show up if there is only 1 version. Maybe a disabled slider with 1 version dot in the middle would be more intuitive?

[edemaine]

@diomidov Fixed.