* Remove `unwrap()` from code
Remove `unwrap()` from the code (except tests).
Replaced it by either using `expect()` or handling the error more
gracefully.
* Improve documentation
Add examples on how to use the library
Add explanaitions on the dual use of crate::datatypes::Term
Relates to #33
* Update README
* Add contributing guidelines
* Implemented a nom-based parser to read the adf
* Grounded semantics (naive) re-implemented
* Docs added
* Updated Cargo.toml with more Manifest information
* Version update
* Added sort-methods to the parser, so the var-order can be adjusted
* Added sort functionality to the main function
* Added adf-instances as a submodule to the res-folder
* Added README information for the extended integration tests
* Rewritten main-function
Closes#3
added documentation
added clap for program argument handling
fully clippy approved (except where it shall not be changed)
updated workflow for win and linux builds
Signed-off-by: Stefan Ellmauthaler <stefan.ellmauthaler@tu-dresden.de>