Source: https://github.com/feathericons/feather#license Feather is licensed under the MIT License.
License: https://raw.githubusercontent.com/feathericons/feather/master/LICENSE
All icons converted from SVG to PNG, brightness adjusted, colourized with #848484 and resized to 32x32
modifications:
group_gear - feather icon code layered with message - square. Message- square icon resized. 
plugin_link - feather icon coffee layered with square. Coffee icon cropped to leave" prongs" 
plugin. - feather icon coffee layered with plus square. Coffee icon cropped to create "prongs"
i2psnark - feather icon underline - layer added, "U" rotated , line cut and copied over, them cut out to create "magnet.