# Changelog
All notable changes to this project will be documented in this file.
## [2.4.0] - 2020-05-05
## Added
- `Formatter::margin_len` returning the size of the margin used to render the line numbers.
## [2.3.0] - 2020-04-28
### Changed
- Fix compilation failure without `colors` feature.
- Change many functions into `const fn`.
- Do not use `clippy::pedantic`.
## [2.2.0] - 2020-06-20
### Added
- New `Layout` type to index UTF8-string by cursor positions.
### Changed
- Moved `SourceBuffer` into a `lazy` submodule of `buffer`.
This should not change anything for the user.
## [2.1.0] - 2020-06-13
### Added
- New functions `inner_into` and `inner_try_into` converting inner values in `Loc`.
## [2.0.1] - 2020-06-13
### Added
- Reference to the `README.md` in `Cargo.toml`
## [2.0.0] - 2020-06-13
### Added
- A `Log` type to wrap values that can be located in a source file (with a span).
- A `Metrics` trait to control the width of each character and the tab stop length.
The functions `Position::next` and `Span::push` now take a metrics as parameter.
- The `DefaultMetrics` type and `DEFAULT_METRICS` constant give a default implementation of the `Metrics` trait ready to use.
- A new `formatting_challenge` example has been added.
### Changed
- The `lazy` module have been removed and its content moved to the crate's root.
- `lazy::Buffer` is now `SourceBuffer`.
- The error type of `SourceBuffer` is now a parameter of the type.
It does not have to be `std::io::Error` anymore.
- Access functions `index_at`, `at` and `get` in `SourceBuffer` not returns
`Result<Option<_>, _>` instead of `Option<Result<_, _>>`.
- `Position::shift` to move a position in place.
- `fmt::Formatter::get` is now `fmt::Formatter::render`.
- The output of `fmt::Formatter::render` is not a string but a `Rendered` instance that implements `Display`.
- The whole formatting internal code has been improved:
- Multi-line labels are now handled.
- Lines can intertwine without causing non-termination.
- Examples have been modified to comply to all the changes.