v0.0.8:
* Use `proc-macro-hack` to avoid `feature(proc_macro_hygiene)`.
* Use auto-deref specialization to avoid `feature(proc_macro_hygiene)`.
v0.0.8:
* Fix compilation error in assert!()
* Limit scope of generated temporary variables
v0.0.7:
* Update documentation.
v0.0.6:
* Support additional arguments to print custom messages with failures.
v0.0.5:
* Update documentation.
* Fix images in documentation.
v0.0.4:
* Support pattern matching with `let` expressions in assertions.