v0.3.0

• Breaking: Raise MSRV to 1.61.0
• Breaking: toml, yaml and json5 are no longer default features (19d9ddc). You now have to manually specify the features you need in Cargo.toml.
• Breaking: env vars set to an empty string, which fail to deserialize/parse/validate are now treated as not set. This is technically a breaking change, but I think this is the expected behavior and shouldn't affect you. (#39)
• ⭐ Add validation feature (#40)
  • #[config(validate = path::to::function)] field: u32 to call the given function during field deserialization.
  • #[config(validate(!s.is_empty(), "user must not be empty"))] user: String is a assert!-style syntax to simple validation checks.
  • Validation can also be added to full structs.
  • See docs and examples for more information!
• Stop including Error::source in the Display output of Error (d454f0957)
• Improve & refactor docs of derive(Config a bit
• Update dependencies (syn to 2.0, heck to 0.5): this shouldn't affect you, except for faster compile times due to smaller dependency tree.

v0.2.6

• Fix compile errors when using confique derive without having serde in your direct dependencies (see #38).
• Update toml dependency to 0.8
• Fix some typos in docs

v0.2.5

• Add #[config(partial_attr(...))] struct attribute to specify attributes for
  the partial type.
• Allow "yes" and "no" as values when deserializing bool from env. Also, the
  match is done completely case insensitive now, such that e.g. "True", "tRuE"
  are accepted now.

0.2.4

• Fixed enum deserialization from env values

v0.2.3

Fixed

• Add #[allow(missing_docs)] to some generated code to avoid problems in
  crates that #[forbid(missing_docs)] globally.
• Fix badge in README

Added

• Add short docs to generated module (to explains its purpose and avoid
  confusion when people find it in their docs)

Changed

• Internal change that potentially improves compile time a tiny bit.

v0.2.2

Fixed

• Use fully qualified paths for all symbols emitted by the derive macro.
  Before this, the derive would throw errors if you shadowed any of the symbols
  Result, Option, Ok, None or Some. A test has been added to make sure
  this does not happen again in the future.
  (Partially in #23, thanks @aschey)

v0.2.1

Added

• parse_env attribute for custom parsing of environment variables (allows you
  to load lists and other complex objects from env vars).
  (in #22, thanks @cyphersnake)

Changed

• Updated serde_yaml to 0.9 (this is only an internal dependency).

v0.2.0

Added

• Add support for array default values, e.g. #[config(default = [1, 2, 3])
• Add support for map default values, e.g. #[config(default = { "cat": 3, "dog": 5 })
• Add JSON5 support
• Show environment variable key in config template
• Impl PartialEq for all meta items
• Impl Serialize for meta::Expr

Changed

• Breaking: rename {toml,yaml}::format to template
• Breaking: make FormatOptions and some meta types #[non_exhaustive]
• Move to Rust 2021 (bumps MSRV to 1.56)
• Improved docs

Fixed

• Fix type inference for float default values
• Fix name clash with generated helper functions
• Fix incorrect newlines for string default values in YAML config template

Internal

• Rewrite large parts of the crate, mostly to deduplicate logic
• Add lots of tests

v0.1.4

Fixed

• Derive attribute env can now be used together with deserialize_with (#2)

v0.1.3 (2022-04-07)

Fixed

• Derive macro does not product unparsable output anymore if the visibility
  modifier of the struct is pub or pub(in path).

Changed

• The output of toml::format now emits empty lines above nested objects in a
  more useful manner.