Black and White Modes are Stored with 32 Bit Color Depth

[lesageethan]

When dithering is set to black and white, the dithered images outputted are using 32 bit color depth, which is unnecessary as 1-bit depth could be used instead.

In the example images attached, the output from DitherIt is 9.31 KB:

If converted to 1-bit using a Python Script, we get a size of just 3.86KB, with no loss in image quality:

Would it be possible to add a conversion to 1-bit of BW color modes? I wouldn't mind writing the code and submitting a pull request if so.

[alexharris]

Hi Ethan, sure. I would be happy to accept a pull request, thank you!