Add logarithmic scale. Imperfect but does mostly work so I think it's worth merging this work from the past few weeks.

Fix logging.

Tweak graph range for even nicer intervals.

Make the graph slightly nicer for flat series. Avoids making the range of the graph go into the negative if the series isn't negative already.

Fix tick marks. Use the range (rather than the domain) so the ticks are spaced appropriately. Also sets an arbitrary range if the full range is 0 (if the series is always at the same value) so that the line actually appears.

Clean up Spy messages. Delete some Spy logging messages that aren't necessary anymore and convert a few others to different levels.

Style fixes.

Remove unneeded await modifier.

Change popup background.

Add zero line and adjust label position.