A simple newtype wrapper around failure::Error
The primary items exported by this library are:
ExitFailure: a wrapper around
failure::Errorto allow ? printing from main present a nicer error message
Basically, ExitFailure should only ever be used in the return type for
main() -> Result<(), exitfailure::ExitFailure>
Will also include the backtrace as prepared by the failure::Error crate, if the environment variable RUST_BACKTRACE=1 is set.
The newtype wrapper around