ENH: Allow #/♭ characters in dict names for sharp/flat notes

[TEParsons]

No description provided.

[codecov]

Codecov Report

Merging #3726 (44a1f27) into release (d6544c0) will not change coverage.
The diff coverage is n/a.

❗ Current head 44a1f27 differs from pull request most recent head b310ac6. Consider uploading reports for the commit b310ac6 to get more accurate results

@@           Coverage Diff            @@
##           release    #3726   +/-   ##
========================================
  Coverage    43.24%   43.24%           
========================================
  Files          267      267           
  Lines        52806    52806           
  Branches      9110     9110           
========================================
  Hits         22835    22835           
  Misses       27650    27650           
  Partials      2321     2321           

Impacted Files	Coverage Δ
psychopy/sound/_base.py	77.34% <ø> (ø)

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[coveralls]

Coverage remained the same at 47.078% when pulling 44a1f27 on TEParsons:_notePseudos into d6544c0 on psychopy:release.

[coveralls]

Coverage remained the same at 47.078% when pulling 44a1f27 on TEParsons:_notePseudos into d6544c0 on psychopy:release.

[peircej]

Have you not introduced an indentation error here?