Add support for hashing dates in pn.cache

[philippjfr]

No description provided.

[codecov]

Codecov Report

Merging #4004 (5d39268) into master (9a5d7e2) will decrease coverage by 8.97%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4004      +/-   ##
==========================================
- Coverage   83.69%   74.71%   -8.98%     
==========================================
  Files         223      223              
  Lines       33109    33117       +8     
==========================================
- Hits        27709    24742    -2967     
- Misses       5400     8375    +2975     

Flag	Coverage Δ
ui-tests	?
unitexamples-tests	74.71% <100.00%> (-0.01%)	⬇️

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Impacted Files	Coverage Δ
panel/io/cache.py	82.14% <100.00%> (-0.37%)	⬇️
panel/tests/io/test_cache.py	100.00% <100.00%> (ø)
panel/tests/ui/widgets/test_tabulator.py	9.50% <0.00%> (-89.47%)	⬇️
panel/tests/ui/widgets/test_input.py	11.34% <0.00%> (-88.13%)	⬇️
panel/tests/ui/layout/test_accordion.py	14.72% <0.00%> (-85.28%)	⬇️
panel/tests/ui/widgets/test_sliders.py	15.42% <0.00%> (-84.58%)	⬇️
panel/tests/ui/layout/test_card.py	18.01% <0.00%> (-81.99%)	⬇️
panel/tests/ui/io/test_convert.py	15.92% <0.00%> (-79.65%)	⬇️
panel/tests/ui/test_reactive.py	26.53% <0.00%> (-73.47%)	⬇️
panel/tests/ui/template/test_fastgridtemplate.py	28.57% <0.00%> (-71.43%)	⬇️
... and 32 more

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