phantom-type 0.3.0

A `PhantomData` analog which prevents "parameter is never used" error, but does not produce any restrictions in contrast with `PhantomData`.
Documentation
language: rust
rust:
- stable
- beta
- nightly
script:
- cargo build --verbose --no-default-features
- cargo test --verbose --no-default-features
- cargo doc --verbose --no-default-features
- cargo build --verbose
- cargo test --verbose
- cargo doc --verbose