We are starting to include a lot of test-only module files, cluttering up `lib.rs`. Proposal: create `src/testing` and move everything into there and the entire mod is `#[cfg(test)]` in lib.rs.
We are starting to include a lot of test-only module files, cluttering up
lib.rs.Proposal: create
src/testingand move everything into there and the entire mod is#[cfg(test)]in lib.rs.