* 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 [anyhow](https://github.com/dtolnay/anyhow) from 1.0.47 to 1.0.48.
- [Release notes](https://github.com/dtolnay/anyhow/releases)
- [Commits](https://github.com/dtolnay/anyhow/compare/1.0.47...1.0.48

)

---
updated-dependencies:
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Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.17 to 0.3.18.
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/futures-rs/compare/0.3.17...0.3.18

)

---
updated-dependencies:
- dependency-name: futures
  dependency-type: direct:production
  update-type: version-update:semver-patch
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Bumps [anyhow](https://github.com/dtolnay/anyhow) from 1.0.45 to 1.0.47.
- [Release notes](https://github.com/dtolnay/anyhow/releases)
- [Commits](https://github.com/dtolnay/anyhow/compare/1.0.45...1.0.47

)

---
updated-dependencies:
- dependency-name: anyhow
  dependency-type: direct:production
  update-type: version-update:semver-patch
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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.70 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 [impl-serde](https://github.com/paritytech/parity-common) from 0.3.1 to 0.3.2.
- [Release notes](https://github.com/paritytech/parity-common/releases)
- [Commits](https://github.com/paritytech/parity-common/compare/impl-serde-v0.3.1...impl-serde-v0.3.2

)

---
updated-dependencies:
- dependency-name: impl-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 1.0.68 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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Bumps [cargo_metadata](https://github.com/oli-obk/cargo_metadata) from 0.14.0 to 0.14.1.
- [Release notes](https://github.com/oli-obk/cargo_metadata/releases)
- [Commits](https://github.com/oli-obk/cargo_metadata/compare/v0.14.0...0.14.1

)

---
updated-dependencies:
- dependency-name: cargo_metadata
  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 [structopt](https://github.com/TeXitoi/structopt) from 0.3.23 to 0.3.25.
- [Release notes](https://github.com/TeXitoi/structopt/releases)
- [Changelog](https://github.com/TeXitoi/structopt/blob/master/CHANGELOG.md)
- [Commits](https://github.com/TeXitoi/structopt/compare/v0.3.23...v0.3.25

)

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

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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 [anyhow](https://github.com/dtolnay/anyhow) from 1.0.43 to 1.0.44.
- [Release notes](https://github.com/dtolnay/anyhow/releases)
- [Commits](https://github.com/dtolnay/anyhow/compare/1.0.43...1.0.44

)

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

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Bumps [structopt](https://github.com/TeXitoi/structopt) from 0.3.22 to 0.3.23.
- [Release notes](https://github.com/TeXitoi/structopt/releases)
- [Changelog](https://github.com/TeXitoi/structopt/blob/master/CHANGELOG.md)
- [Commits](https://github.com/TeXitoi/structopt/compare/v0.3.22...v0.3.23

)

---
updated-dependencies:
- dependency-name: structopt
  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 [futures](https://github.com/rust-lang/futures-rs) from 0.3.16 to 0.3.17.
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/futures-rs/compare/0.3.16...0.3.17

)

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

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Bumps [async-std](https://github.com/async-rs/async-std) from 1.9.0 to 1.10.0.
- [Release notes](https://github.com/async-rs/async-std/releases)
- [Changelog](https://github.com/async-rs/async-std/blob/master/CHANGELOG.md)
- [Commits](https://github.com/async-rs/async-std/compare/v1.9.0...v1.10.0

)

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

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Bumps [blake2](https://github.com/RustCrypto/hashes) from 0.9.1 to 0.9.2.
- [Release notes](https://github.com/RustCrypto/hashes/releases)
- [Commits](https://github.com/RustCrypto/hashes/compare/blake2-v0.9.1...blake2-v0.9.2

)

---
updated-dependencies:
- dependency-name: blake2
  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 [anyhow](https://github.com/dtolnay/anyhow) from 1.0.42 to 1.0.43.
- [Release notes](https://github.com/dtolnay/anyhow/releases)
- [Commits](https://github.com/dtolnay/anyhow/compare/1.0.42...1.0.43

)

---
updated-dependencies:
- dependency-name: anyhow
  dependency-type: direct:production
  update-type: version-update:semver-patch
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* Add log output

* Add #326 to changelog

* Bump version

* Fix changelog

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 [which](https://github.com/harryfei/which-rs) from 4.2.1 to 4.2.2.
- [Release notes](https://github.com/harryfei/which-rs/releases)
- [Commits](https://github.com/harryfei/which-rs/compare/4.2.1...4.2.2

)

---
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- dependency-name: which
  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 [which](https://github.com/harryfei/which-rs) from 4.1.0 to 4.2.1.
- [Release notes](https://github.com/harryfei/which-rs/releases)
- [Commits](https://github.com/harryfei/which-rs/compare/4.1.0...4.2.1

)

---
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- dependency-name: which
  dependency-type: direct:production
  update-type: version-update:semver-minor
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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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* Bump version

* Fix release date

* Update changelog

* Release `contract-metadata` v0.3.0

* Fix markdown syntax

* Add `--keep-symbols` flag

* Replace pwasm_utils::optimize by a simple export stripper

* Satisfy clippy

* Fix typos

Co-authored-by: Michael Müller <[email protected]>

* Fix test build errors

* Fix tests

* Rename to `--keep-debug-symbols`

* Add test for `--keep-debug-symbols`

* Fix typos

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

* Restore when/then

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

Bumps [env_logger](https://github.com/env-logger-rs/env_logger) from 0.8.4 to 0.9.0.
- [Release notes](https://github.com/env-logger-rs/env_logger/releases)
- [Changelog](https://github.com/env-logger-rs/env_logger/blob/main/CHANGELOG.md)
- [Commits](https://github.com/env-logger-rs/env_logger/compare/v0.8.4...v0.9.0

)

---
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- dependency-name: env_logger
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  update-type: version-update:semver-minor
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Bumps [anyhow](https://github.com/dtolnay/anyhow) from 1.0.41 to 1.0.42.
- [Release notes](https://github.com/dtolnay/anyhow/releases)
- [Commits](https://github.com/dtolnay/anyhow/compare/1.0.41...1.0.42

)

---
updated-dependencies:
- dependency-name: anyhow
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  update-type: version-update:semver-patch
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Bumps [cargo_metadata](https://github.com/oli-obk/cargo_metadata) from 0.13.1 to 0.14.0.
- [Release notes](https://github.com/oli-obk/cargo_metadata/releases)
- [Commits](https://github.com/oli-obk/cargo_metadata/compare/v0.13.1...v0.14.0

)

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