Phonon bs parsing

[tsmathis]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 2.00000% with 49 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.09%. Comparing base (da5eabc) to head (ae7b31a).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
emmet-core/emmet/core/phonon.py	2.00%	49 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1469      +/-   ##
==========================================
- Coverage   85.31%   85.09%   -0.23%     
==========================================
  Files         230      230              
  Lines       18837    18887      +50     
==========================================
+ Hits        16070    16071       +1     
- Misses       2767     2816      +49     

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