* Update copyright date to 2022

* Remove outdated `rust-version` entries from `Cargo.toml`

* Tune doc comments

* Streamline `keywords` in `Cargo.toml`

* Write Wasm consistent in doc comments

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.78 to 1.0.79.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.78...v1.0.79)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [semver](https://github.com/dtolnay/semver) from 1.0.4 to 1.0.5.
- [Release notes](https://github.com/dtolnay/semver/releases)
- [Commits](https://github.com/dtolnay/semver/compare/1.0.4...1.0.5)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [pretty_assertions](https://github.com/colin-kiegel/rust-pretty-assertions) from 1.0.0 to 1.1.0.
- [Release notes](https://github.com/colin-kiegel/rust-pretty-assertions/releases)
- [Changelog](https://github.com/colin-kiegel/rust-pretty-assertions/blob/main/CHANGELOG.md)
- [Commits](https://github.com/colin-kiegel/rust-pretty-assertions/compare/v1.0.0...v1.1.0)

---
updated-dependencies:
- dependency-name: pretty_assertions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Bumps [serde](https://github.com/serde-rs/serde) from 1.0.135 to 1.0.136.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.135...v1.0.136)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.75 to 1.0.78.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.75...v1.0.78)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.134 to 1.0.135.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.134...v1.0.135)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.133 to 1.0.134.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.133...v1.0.134)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.73 to 1.0.74.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.73...v1.0.74)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde](https://github.com/serde-rs/serde) from 1.0.132 to 1.0.133.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.132...v1.0.133)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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* move to rust 2021

* rust 2021
MSRV 1.56.1

Co-authored-by: Andrew Jones <[email protected]>

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.130 to 1.0.131.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.130...v1.0.131)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.72 to 1.0.73.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.72...v1.0.73)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.71 to 1.0.72.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.71...v1.0.72)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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* Bump ink! deps to rc7

* Update changelog

* Bump version to `0.16.0`

* Bump `metadata` version to `0.5.0`

* Reference new `metadata` version

* Expose public metadata fields

* Implement full metadata decoding

* Fix clippy warning

* Fix wasm serialization

* Add comments

* Added test

* Fmt

* Update CHANGELOG.md

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.70 to 1.0.71.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.70...v1.0.71)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.69 to 1.0.70.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.69...v1.0.70)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.68 to 1.0.69.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.68...v1.0.69)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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* Update changelog

* Bump version for `cargo-contract`

* Bump version for `contract-metadata`

* Bump version for `contract-metadata`

* Update changelog

* Update changelog

Bumps [pretty_assertions](https://github.com/colin-kiegel/rust-pretty-assertions) from 0.7.2 to 1.0.0.
- [Release notes](https://github.com/colin-kiegel/rust-pretty-assertions/releases)
- [Changelog](https://github.com/colin-kiegel/rust-pretty-assertions/blob/main/CHANGELOG.md)
- [Commits](https://github.com/colin-kiegel/rust-pretty-assertions/compare/v0.7.2...v1.0.0)

---
updated-dependencies:
- dependency-name: pretty_assertions
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.67 to 1.0.68.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.67...v1.0.68)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde](https://github.com/serde-rs/serde) from 1.0.129 to 1.0.130.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.129...v1.0.130)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.66 to 1.0.67.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.66...v1.0.67)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde](https://github.com/serde-rs/serde) from 1.0.128 to 1.0.129.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.128...v1.0.129)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde](https://github.com/serde-rs/serde) from 1.0.127 to 1.0.128.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.127...v1.0.128)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde](https://github.com/serde-rs/serde) from 1.0.126 to 1.0.127.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.126...v1.0.127)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [semver](https://github.com/dtolnay/semver) from 1.0.3 to 1.0.4.
- [Release notes](https://github.com/dtolnay/semver/releases)
- [Commits](https://github.com/dtolnay/semver/compare/1.0.3...1.0.4)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.65 to 1.0.66.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.65...v1.0.66)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.64 to 1.0.65.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.64...v1.0.65)

---
updated-dependencies:
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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* Release `contract-metadata` v0.3.0

* Fix markdown syntax

Bumps [semver](https://github.com/dtolnay/semver) from 1.0.1 to 1.0.3.
- [Release notes](https://github.com/dtolnay/semver/releases)
- [Commits](https://github.com/dtolnay/semver/compare/1.0.1...1.0.3)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [semver](https://github.com/dtolnay/semver) from 0.11.0 to 1.0.0.
- [Release notes](https://github.com/dtolnay/semver/releases)
- [Commits](https://github.com/dtolnay/semver/compare/0.11.0...1.0.0)

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Bumps [url](https://github.com/servo/rust-url) from 2.2.1 to 2.2.2.
- [Release notes](https://github.com/servo/rust-url/releases)
- [Commits](https://github.com/servo/rust-url/compare/v2.2.1...v2.2.2)

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Bumps [pretty_assertions](https://github.com/colin-kiegel/rust-pretty-assertions) from 0.7.1 to 0.7.2.
- [Release notes](https://github.com/colin-kiegel/rust-pretty-assertions/releases)
- [Changelog](https://github.com/colin-kiegel/rust-pretty-assertions/blob/main/CHANGELOG.md)
- [Commits](https://github.com/colin-kiegel/rust-pretty-assertions/compare/v0.7.1...v0.7.2)

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