Changed stamp karma to proper(ish) PageRank.

[tayler6000]

Changed log_error and log_exception to not be async, made log_error_async and log_exception_async instead. Old names now get the event loop for you and await the async versions for you. Changed some logging messages.
Added a recalculatestamps command which can be used for debugging, otherwise it's pretty much useless. Added a get_total_drains utility function to see how many drains there are in the PageRank calculation.

Waiting for Rob's review before merge.

(ish) comes from the fact that we're not supposed to do proper PageRank.

[Aprillion]

(minor) would be nicer to split the unrelated changes into 2 commits instead of just 1 commit for both log_error changes and karma changes..

[tayler6000]

(minor) would be nicer to split the unrelated changes into 2 commits instead of just 1 commit for both log_error changes and karma changes..

Yeah, I thought about it, but I did the karma first then realized I made the log error system in a stupid way when I went to implement it.

[tayler6000]

I think... GitHub broke my PR...

[Gurkenglas]

Without yet putting on my math hat or opening up VSCode - I imagine a professional code reviewer might say:

• The SQL query is formatted like a newspaper column.
• in this day and age and week of the year you ought to be able to tell ChatGPT to clean up the commit structure
• Use an IDE that tells you that you deleted the usage of gamma but not its definition.
• Take the commented-out logging code out. If someone finds some unstamply reason to do their debugging with printf, Copilot can tell them how to do a printf.
• What problem does swapping out the algorithm solve?