[GitHub Actions] Mirror README.md from src/lib.rs

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Automated changes by create-pull-request GitHub action

[github-actions]

Filename                            Stmts    Miss  Cover    Missing
--------------------------------  -------  ------  -------  -------------------------------------
src/pattern/writer.rs                 125      51  59.20%   136-141, 148-156, 190-202, 234-264
src/pattern/buffer.rs                  33       0  100.00%
src/pattern/io_processor.rs            56      56  0.00%    77-173
src/traits/file_formats.rs             25       0  100.00%
src/traits/prefer.rs                    5       0  100.00%
src/traits/read_file.rs                56      56  0.00%    46-153
src/traits/convert_buffer.rs           30       0  100.00%
src/traits/append_as_line.rs           12       0  100.00%
src/traits/colour_message.rs           19       0  100.00%
src/traits/to_stderr.rs                 6       0  100.00%
src/graphing/agd.rs                   228       2  99.12%   356, 378
src/graphing/graph.rs                 219       0  100.00%
src/cff/cffreference.rs               109       0  100.00%
src/cff/cff_create.rs                 226       2  99.12%   237-245
src/changelog/ronlog.rs               227     162  28.63%   27-288, 354, 395-401
src/changelog/comment_changes.rs      274     274  0.00%    26-473
src/changelog/fragment.rs             128       2  98.44%   138, 146
src/macros.rs                          23       0  100.00%
src/utilities.rs                       94       7  92.55%   22-26, 64-77, 145
src/running.rs                          8       0  100.00%
src/main.rs                             3       3  0.00%    22-24
src/complain.rs                       248      11  95.56%   30-75
src/increment_version.rs              179      26  85.47%   31-47, 115-117, 136, 142-147, 253-270
src/version.rs                         69       0  100.00%
src/application.rs                     35      35  0.00%    32-146
TOTAL                                2437     687  71.81%