Vendor things

third-party/vendor/toml_edit/README.md

@@ -0,0 +1,59 @@
+# toml_edit
+
+[![Build Status](https://github.com/ordian/toml_edit/workflows/Continuous%20integration/badge.svg)](https://github.com/ordian/toml_edit/actions)
+[![codecov](https://codecov.io/gh/ordian/toml_edit/branch/master/graph/badge.svg)](https://codecov.io/gh/ordian/toml_edit)
+[![crates.io](https://img.shields.io/crates/v/toml_edit.svg)](https://crates.io/crates/toml_edit)
+[![docs](https://docs.rs/toml_edit/badge.svg)](https://docs.rs/toml_edit)
+[![Join the chat at https://gitter.im/toml_edit/Lobby](https://badges.gitter.im/a.svg)](https://gitter.im/toml_edit/Lobby)
+
+
+This crate allows you to parse and modify toml
+documents, while preserving comments, spaces *and
+relative order* or items.
+
+`toml_edit` is primarily tailored for [cargo-edit](https://github.com/killercup/cargo-edit/) needs.
+
+## Example
+
+```rust
+use toml_edit::{Document, value};
+
+fn main() {
+    let toml = r#"
+"hello" = 'toml!' # comment
+['a'.b]
+    "#;
+    let mut doc = toml.parse::<Document>().expect("invalid doc");
+    assert_eq!(doc.to_string(), toml);
+    // let's add a new key/value pair inside a.b: c = {d = "hello"}
+    doc["a"]["b"]["c"]["d"] = value("hello");
+    // autoformat inline table a.b.c: { d = "hello" }
+    doc["a"]["b"]["c"].as_inline_table_mut().map(|t| t.fmt());
+    let expected = r#"
+"hello" = 'toml!' # comment
+['a'.b]
+c = { d = "hello" }
+    "#;
+    assert_eq!(doc.to_string(), expected);
+}
+```
+
+## Limitations
+
+Things it does not preserve:
+
+* Scattered array of tables (tables are reordered by default, see [test]).
+* Order of dotted keys, see [issue](https://github.com/ordian/toml_edit/issues/163).
+
+## License
+
+Licensed under either of
+
+- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://apache.org/licenses/LICENSE-2.0)
+- MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
+
+[test]: https://github.com/ordian/toml_edit/blob/f09bd5d075fdb7d2ef8d9bb3270a34506c276753/tests/test_valid.rs#L84