Handle nested BaseSettings without nested delimiter

[mssalvatore]

Fixes #36

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (b3f90f2) to head (32fadc6).

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #38   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          177       183    +6     
  Branches        48        50    +2     
=========================================
+ Hits           177       183    +6     

Flag	Coverage Δ
integration_tests	81.96% <16.66%> (-2.22%)	:arrow_down:
total	100.00% <100.00%> (ø)
unit_tests	73.77% <100.00%> (+0.88%)	:arrow_up:

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[mssalvatore]

@radeklat Hey! I'm wondering if there's anything I can do to grease the skids on this PR. Thanks in advance!

[mssalvatore]

Thanks, @radeklat!