Add holiday extensions to F1155, F1255

[elupus]

Fixes #175
Related to #174

Verified that the field value of 10 is invalid on F1155, so it likely is the same problem on the F750.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 58.55%. Comparing base (5c1eba7) to head (c09fb08).
Report is 10 commits behind head on master.

Files with missing lines	Patch %	Lines
nibe/console_scripts/convert_csv.py	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #178      +/-   ##
==========================================
+ Coverage   57.84%   58.55%   +0.70%     
==========================================
  Files          14       14              
  Lines        1274     1291      +17     
==========================================
+ Hits          737      756      +19     
+ Misses        537      535       -2     

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

[elupus]

What do you think, should we just add this to all F-series?

[elupus]

Turns out the d object is a pandas object here and not a dict. pop there does not take a default argument. I think we don't recursively flatten the pandas object to a nested dict.