v0.5.4-alpha

Probably fixes multiple issues with picking only black/white.

If you want help with testing, you can:

1. download attached zip
2. extract it to some directory (there is no parent directory in zip so create some first)
3. in Google Chrome go to chrome://extensions page
4. disable normal Eye Dropper if you don't want to guess which is which :)
5. click on Developer mode in top right corner
6. click on Load unpacked
7. select directory where you unpacked ED to