A simple, pure-nim implementation of alpha bleeding. Credit to urraka for the algorithm used in this, which was taken from this repository.
Assuming you have Nim installed, simply run nimble install.
bleedalpha [input] [output][input] must be a valid PNG image file, and output must be a valid file location.
Similarly to the urraka's implementation, a alpha remover (rmalpha) is also provided. Like bleedalpha, it takes an input and output with the same constraints.