feat: Add the pantanal colormap

[apcamargo]

I created this colormap because I needed a perceptually uniform colormap that start started/ended with white.

from coloraide import Color

N_STEPS = 256

cm = Color.interpolate(
    [
        "color(--oklch 1.0000 0.00 000.0 / 1)",
        "color(--oklch 0.8125 0.20 122.0 / 1)",
        "color(--oklch 0.6250 0.18 192.0 / 1)",
        "color(--oklch 0.4375 0.16 232.0 / 1)",
        "color(--oklch 0.2500 0.14  34.0 / 1)",
    ],
    space="oklab",
    method="bspline",
)
cm = [cm(x / N_STEPS).convert("srgb").to_string(hex=True) for x in range(N_STEPS + 1)]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Please upload report for BASE (main@590d77e). Learn more about missing BASE report.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #81   +/-   ##
=======================================
  Coverage        ?   96.99%           
=======================================
  Files           ?      161           
  Lines           ?     2097           
  Branches        ?        0           
=======================================
  Hits            ?     2034           
  Misses          ?       63           
  Partials        ?        0           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[apcamargo]

Doesn't look like the test errors are related to the changes made in the PR.

[tlambert03]

sorry for the delay and thanks for another lovely colormap! Will release today