If you send a pull request / patch, please observe the following.## LicensingSince this crate is dual-licensed,[section 5 of the Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0#contributions)is considered to apply in the sense of Contributions being automaticallyunder the Apache License 2.0 or MIT dual license (see the `COPYRIGHT` file).That is, by the act of offering a Contribution, you place your Contributionunder the Apache License 2.0 or MIT dual license stated in the `COPYRIGHT`file. Please do not contribute if you aren't willing or allowed to license yourcontributions in this manner.You are encouraged to dedicate test code that you contribute to the PublicDomain using the CC0 dedication. If you contribute test code that is notdedicated to the Public Domain, please be sure not to put it in a part ofsource code that the comments designate as being dedicated to the PublicDomain.## Copyright NoticesIf you require the addition of your copyright notice, it's up to you to edit inyour notice as part of your Contribution. Not adding a copyright notice istaken as a waiver of copyright notice.## No Encodings Beyond The Encoding StandardPlease do not contribute implementations of encodings that are not specifiedin the [Encoding Standard](https://encoding.spec.whatwg.org/).For example, an implementation of UTF-7 is explicitly out of scope for thiscrate and is, therefore, provided by the [`charset`](https://crates.io/crates/charset)crate instead. For single-byte DOS encodings, please see the[`oem_cp`](https://crates.io/crates/oem_cp) crate.## Compatibility with Stable RustPlease ensure that your Contribution compiles with the latest stable-channelrustc.## rustfmtThe `rustfmt` version used for this code is `rustfmt-nightly`. Please eitheruse that version or avoid using `rustfmt` (so as not to reformat all the code).## Unit testsPlease ensure that `cargo test` succeeds.