* Run rustfmt over repository.
* Bump `syn` to 0.15
* Implemented ability to `serialize_all` using cases from `heck`.
Issue #21
* Use `path` and `version` in dependency specifications.
Issue #21
* Updated documentation.
Issue #21
* Added `CHANGELOG.md`.
* Also convert case when deriving `Display`.
Issue #21
* Added `EnumDiscriminants` derive.
Issue #33
* Added the ability to rename derived `EnumDiscriminants`.
Issue #33
* Updated `README.md` and lib.rs docs.
Issue #33
* Updated `CHANGELOG.md`.
Issue #33
* WIP: refactoring to allow attributes on discriminants enum.
* Use single `strum_discriminants` top level attribute.
Issue #33
* Allow multiple declarations of `strum_discriminants` attribute.
Issue #33
* Pass through all other attributes to discriminant enum.
Issue #33
* Add `impl From<MyEnum> for MyEnumDiscriminants`.
Issue #33
* Add `impl<'_enum> From<&'_enum MyEnum> for MyEnumDiscriminants`.
Issue #33
* Added complex case test for `From` derivation.
Issue #33
* Added docs to some helper functions.
* Added docs about `From` impls.
Issue #33
