- Updated dependencies (bitflag v1.3, rpassword v6.0)
- More tests
- Removed superfluous method `ErrorWith<T>::drop_payload()`
- most environment variables related methods now accept `impl AsRef<OsStr>`
  and thus can be called with `&str` and `&OsStr`.

- Refactoring
- `Error::new()` is no longer public
- Minimum supported Rust version is now 1.46.0
- Fixed possible stacked borrows bug in a test case.

- Fixed handling of binary messages on Linux
- Refactoring

- `pam_sys` dependency upgraded to 1.0.0-alpha3
- Documentation rewording
- `forbid(unsafe_code)` in modules that don't need it
- Fixed a compile warning
- Partial support for testing with miri

Release v0.3.0

- `pam_sys` dependency upgraded, making API changes neccessary
- API change: `ReturnCode` replaced by `ErrorCode`
- API change: `Flag` now uses `bitflags!`
- Support for Linux-specific `PAM_RADIO_TYPE` and `PAM_BINARY_PROMPT`
- Optional `serde` serialization support for some types
- Added `EnvList -> HashMap` conversion
- New `ErrorWith<T>::into_without_payload()` convenience method
- Increased test coverage

Release v0.2.0

- API change: PAM item getters now return `Result<_>` instead of `Err<Option<_>>`
- Code cleanup
- More tests

Patch release v0.1.2

- Fixed length check and calculation in `set_xauthdata`
- Removed superfluous size checks

Patch release v0.1.1

Fixes a memory leak.

First release