Fix/ Boolean abbreviations get evaluated in keyword context

[FoamScience]

This is a tiny PR to fix a minor bug with situations where n, f, y, or t appear as a keyword in a key-val tuple.

Original behavior:

The unit tests:

    assert dumps([("a", "b"), ("c", "d"), ("n", "no"), ("y", "yes")]) == b"(a b; c d; n no; y yes;)"
    assert (
        FoamFile.dumps({"a": "b", "c": "d", "n": "no", "y": "yes"})
        == b"{FoamFile {version 2.0; format ascii; class dictionary;}} a b; c d; n no; y yes;"
    )

fail, saying, respectively:

- b'(a b; c d; n no; y yes;)'
+ b'(a b; c d; no no; yes yes;)'
-----------------------------------------
-  b'{FoamFile {version 2.0; format ascii; class dictionary;}} a b; c d; n no; y yes;'
+  b'{FoamFile {version 2.0; format ascii; class dictionary;}} a b; c d; no no; yes yes;'

In short, "n" and "y" get normalized even if they are keywords. This gets annoying for example when controlling nProcs settings for decomposition methods is desired...

Suggested solution:

• Don't consider these single-char abbreviations as booleans. Effects: All unit tests should still pass; these abbreviations are not supported by OpenFOAM so this should be alright.

An alternative solution that I haven't had time to try is to dig around normalize_data/normalize_keyword to skip normalizing the first element in a tuple but that would be hard to distinguish because of OpenFOAM's ambiguous syntax: without full context, the first "n" in ("n" "n") cannot be judged to be a keyword or a data element.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.69%. Comparing base (da0d252) to head (c50798c).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #415      +/-   ##
==========================================
- Coverage   89.74%   89.69%   -0.05%     
==========================================
  Files          22       22              
  Lines        2057     2057              
==========================================
- Hits         1846     1845       -1     
- Misses        211      212       +1     

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[gerlero]

@FoamScience thanks!

• these abbreviations are not supported by OpenFOAM so this should be alright.

Makes total sense to get rid of them then.

[gerlero]

@FoamScience released in version 1.1.1. Thanks again!

[FoamScience]

Thanks for the quick response! and the quick release! saves me the trouble of requiring a git commit :)