Fix staircasing in layout (@talex5 #28). Instead of placing a new fiber below all overlapping fibers, place it in the first large-enough gap.
Allow setting viewport values explicitly (@talex5 #29). Press s to see or edit the start time. Press d to see or edit the duration time. Useful to find values for command-line rendering or to ensure that images have the same scale for comparison.
Add a popup menu (@talex5 #31).
Add Reload feature (@talex5 #27, #33). With eio-trace run the window opens after 1 second. Press F5 to get further updates.
Add Export image to GTK UI (@talex5 #32).
Show GC running in red (@talex5 #30). This makes it easier to see the difference between domains actively running GC vs waiting for other domains to be ready.
Update README now that eio-trace is released (@talex5 #26).
Explain what to do about lost events (@talex5 #34).