Merge pull request #173 from bonachea/main

[NO REVIEW] CI: Add flang-22

Merge pull request #170 from rouson/fix-write-file_t

[NO REVIEW] Fix: check if file is already open in file_t generic binding write_lines

Merge pull request #163 from bonachea/remove-legacy-driver

Remove legacy test drivers (issue #161)

Merge pull request #153 from bonachea/copy-diagnosis

Add a test_diagnosis_t copy constructor

Merge pull request #140 from BerkeleyLab/fix-readme-string-expressions

Documentation: fix & improve string_t expression table in README

Merge pull request #139 from bonachea/ci-update-25-11

[NO REVIEW] CI: Incorporate recent platform changes

feat(test_diagnosis): int64 relational operators

This commit adds support for integer(int64) operands for the
following operators:

  - .isAtleast.
  - .isAtMost.
  - .lessThan.
  - .greaterThan.

To keep the operator implementations uniform, this commit also
replaces one integer(c_size_t) operator with an integer(int64),
which is equivalent with every compiler tested.  Also, int64
predates c_size_t and therefore is more likely to be supported
by older compiler versions. Fortran 2008 introduced int64.
Fortran 2018 introduced c_size_t.

Merge pull request #133 from BerkeleyLab/nagfor-issues

Work around GNU/NAG compiler issues

Merge pull request #122 from BerkeleyLab/fix-scaffold-for-gfortran

doc(demo/README.md): blank-space edit

Merge pull request #119 from BerkeleyLab/edit-readme

Documentation: clarify operands, trim build/test table