Merge pull request brotzeit#342 from brotzeit/flycheck-check-toolchain

automatically detect toolchain and use correct clippy params

Merge pull request brotzeit#329 from brotzeit/rust-mode-format-hooks

set rust-mode format hook funtions

bump version to 2.1

- additional org-babel keywords
- use polymode optionally for cargo-run

bump version to 2.0

rustic now depends on rust-mode