Make format

[znicholls]

First tweak I'd make to #20, run make format to auto-format the code

[codecov]

Codecov Report

Merging #21 into RL-cleanup will not change coverage.
The diff coverage is 75%.

@@             Coverage Diff             @@
##           RL-cleanup      #21   +/-   ##
===========================================
  Coverage       99.05%   99.05%           
===========================================
  Files              10       10           
  Lines             318      318           
  Branches           54       54           
===========================================
  Hits              315      315           
  Misses              1        1           
  Partials            2        2

Impacted Files	Coverage Δ
src/silicone/stats_utils.py	100% <ø> (ø)	⬆️
...one/database_crunchers/quantile_rolling_windows.py	100% <100%> (ø)	⬆️
src/silicone/plotting.py	95.23% <50%> (ø)	⬆️

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[Rlamboll]

honestly, some of these look pretty ugly to me - do we have to do things like
derived_relationships[
db_time
] = lambda unused_variable, ys=ys, cumsum_weights=cumsum_weights, quantile=quantile: min(
ys[cumsum_weights >= quantile]
)

Is there any way to make it ok with slightly longer lines?

[znicholls]

Ye somewhere in the docs we can https://black.readthedocs.io/en/stable/the_black_code_style.html#line-length

I’ve found that it looks better over time as you get used to the consistency although it is definitely tough to start