Cargo Inspect Versions Save

• Update to the latest version of prettyprint, which removes the dependency to bindgen

Update to latest syntect, which removes the dependency to llvm. See #57

Add missing Cargo.lock (#30). Thanks to @minijackson.

Added ability to choose what kind of format a flowgraph is rendered to using the --format argument. The default flowgraph format is now SVG.

• Flowgraphs can now be generated by using cargo inspect --unpretty=flowgraph=main. This requires dot to be installed on the machine. Thanks to @jonathansty

This release removes the implicit dependency on git2 caused by prettyprint (see https://github.com/mre/prettyprint/issues/6). This fixes compilation on macOS in the case where openssl wasn't installed. Thanks to @lilyball for reporting.

This release adds two nice features to cargo-inspect:

• You can now choose different themes! Simply run cargo inspect --list-themes to get a list of available choices. For example, this will use the GitHub theme, which should work well on white backgrounds: cargo inspect examples/file.rs --theme GitHub [Thanks to @jonathansty]
• The output is now a bit cleaner, because formatting issues are now handled a little better. Even if rustfmt fails, we print the final output on a best-effort basis. Most of the time, this should look quite pleasing to the eye. If you want to see the full debug trace, you can use RUST_LOG=debug. [Thanks to @jonathansty]

• Add logging support
• Add support for diffing files (#11)

• Print unformatted text instead of panicking on rustfmt

• Move to Rust 2018 edition
• Add crate support
• Adds support for plaintext output.
• More examples