Parse Swedish ordinal day suffixes like "24:e" and "1:a"

[AdrianAtZyte]

Fixes #833

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.98%. Comparing base (13da631) to head (7f7b16d).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1484      +/-   ##
==========================================
+ Coverage   98.89%   98.98%   +0.08%     
==========================================
  Files         238      238              
  Lines        3438     3628     +190     
==========================================
+ Hits         3400     3591     +191     
+ Misses         38       37       -1     

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[codspeed]

Merging this PR will not alter performance

✅ 7 untouched benchmarks

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_{Comparing AdrianAtZyte:swedish-ordinals (7f7b16d) with master (72060dc)}

[serhii73]

LGTM