A library for implementing everything needed to deal with git filter pipelines.
Generally, multiple filters are applied in a row forming a pipeline, with each filter being a stage in that pipeline.
This pipeline is pre-determined with each stage being configurable.
The transformation on an input buffer goes in two ways: either a filter is applied, or its effects are undone. Differentiating
between these states is important to avoid comparing unfiltered buffers with filtered ones, for example.
This crate implements the building blocks in terms of applying and undoing filters, along with logic to decide whether
or not to apply such a filter.