v1.5.0

To fix LSBSteg issue #12, we

1. Improve support for non-RGB images (including those with transparency)
2. Add tests for non-RGB images (including those with transparency)
3. Add tests to ensure maximum storage limits are exactly correct

Also, refactor code to prefer f-strings instead of str.format , use context managers instead of io.open() or io.close(), and use a longer line length for readability.

For now, the Click dependency is restricted to <8.1.4 until they fix their mypy support (see pallets/click#2565).

Full Changelog: v1.4.4...v1.5.0