Macros
Allows you to pull the authors for the app from your Cargo.toml at
compile time in the form:
"author1 lastname <author1@example.com>:author2 lastname <author2@example.com>"
Allows you to pull the description from your Cargo.toml at compile time.
Allows you to pull the version from your Cargo.toml at compile time as
MAJOR.MINOR.PATCH_PKGVERSION_PRE
Functions
Parses the input arguments and returns a configuration object.
Return is wrapped in a Result