<commit_before># multi-image-mergetool test-files
## Images
We have generated the following images via Pinta and `pngcrush`:

- checkerboard.png
- dot.png

We have generated the following images via our library itself:

- checkerboard-dot-diff.png

```bash
node --eval "
// DEV: All paths are resolved from root PWD
var looksSameComparator = require('./server/image-comparators/looks-same');
looksSameComparator({
  refImg: './test/test-files/checkerboard.png',
  currentImg: './test/test-files/dot.png',
  diffImg: './test/test-files/checkerboard-dot-diff.png',
}, console.log);
"
pngcrush ./test/test-files/checkerboard-dot-{diff,diff2}.png
mv ./test/test-files/checkerboard-dot-{diff2,diff}.png
```<commit_msg>Updated test-files README to use our tool<commit_after># multi-image-mergetool test-files
## Images
We have generated the following images via Pinta and `pngcrush`:

- checkerboard.png
- dot.png

We have generated the following images via our library itself:

- checkerboard-dot-diff.png

```bash
cd test/test-files
multi-image-mergetool \
    --ref-images checkerboard.png \
    --current-images dot.png \
    --diff-images checkerboard-dot-diff.png \
    --no-browser-open
pngcrush checkerboard-dot-{diff,diff2}.png
mv checkerboard-dot-{diff2,diff}.png
```
{'fraction_non_alphanumeric': 0.13611329661683713, 'fraction_numerical': 0.003147128245476003, 'mean_word_length': 4.067729083665339, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4979685', 'n_tokens_mistral': 430, 'n_tokens_neox': 419, 'n_words': 101}