Updated Parameter mappings

[philippjfr]

Fixes #228

[codecov]

Codecov Report

Merging #999 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #999      +/-   ##
==========================================
+ Coverage   85.85%   85.86%   +<.01%     
==========================================
  Files          99       99              
  Lines       11301    11305       +4     
==========================================
+ Hits         9703     9707       +4     
  Misses       1598     1598

Impacted Files	Coverage Δ
panel/param.py	90.53% <100%> (ø)	⬆️
panel/widgets/select.py	94.24% <100%> (+0.08%)	⬆️

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