Word-search-generator

Fixes

- Output file name error on windows (fixes 80)

Fixes

- Updated Pillow to v11.0.0 since it was breaking during install on Python 3.13

Fixed

- Requirements

Added

- `save()` method now also supports the `solution` argument for "CSV" and "JSON" formats. This will remove all filler characters from the saved output, leaving only characters from the placed puzzle words. Closes issues 41 and 44.
- Testing for solution highlighting in PDF output
- `cropped_size` property which gives the size (in characters) of a cropped/masked puzzle as a (width, height) tuple

Changed

- Updated testing to use fixtures
- Standardized testing variable names

Fixed

- Solution highlighting on exported PDFs

Fixed

- `Word.offset_coordinates()`
- Secret words correctly obey their directional constraints (by duck57). Fixes issue 42.

Changed

- `show()` method now accepts the `hide_fillers` boolean argument
- `True` will hide all filler characters showing only the placed words (negates `solution=True`)