* 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)

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

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

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

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
  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 [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
...

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

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

Bumps [structopt](https://github.com/TeXitoi/structopt) from 0.3.21 to 0.3.22.
- [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/v0.3.21...v0.3.22)

---
updated-dependencies:
- dependency-name: structopt
  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 [env_logger](https://github.com/env-logger-rs/env_logger) from 0.8.3 to 0.8.4.
- [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/v0.8.3...v0.8.4)

---
updated-dependencies:
- dependency-name: env_logger
  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 [pwasm-utils](https://github.com/paritytech/wasm-utils) from 0.18.0 to 0.18.1.
- [Release notes](https://github.com/paritytech/wasm-utils/releases)
- [Commits](https://github.com/paritytech/wasm-utils/commits)

---
updated-dependencies:
- dependency-name: pwasm-utils
  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 [anyhow](https://github.com/dtolnay/anyhow) from 1.0.40 to 1.0.41.
- [Release notes](https://github.com/dtolnay/anyhow/releases)
- [Commits](https://github.com/dtolnay/anyhow/compare/1.0.40...1.0.41)

---
updated-dependencies:
- dependency-name: anyhow
  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 [rustc_version](https://github.com/Kimundi/rustc-version-rs) from 0.3.3 to 0.4.0.
- [Release notes](https://github.com/Kimundi/rustc-version-rs/releases)
- [Commits](https://github.com/Kimundi/rustc-version-rs/compare/v0.3.3...v0.4.0)

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

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

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

Bumps [zip](https://github.com/zip-rs/zip) from 0.5.12 to 0.5.13.
- [Release notes](https://github.com/zip-rs/zip/releases)
- [Commits](https://github.com/zip-rs/zip/commits)

---
updated-dependencies:
- dependency-name: zip
  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 [heck](https://github.com/withoutboats/heck) from 0.3.2 to 0.3.3.
- [Release notes](https://github.com/withoutboats/heck/releases)
- [Changelog](https://github.com/withoutboats/heck/blob/master/CHANGELOG.md)
- [Commits](https://github.com/withoutboats/heck/commits)

---
updated-dependencies:
- dependency-name: heck
  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 [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
...

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

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

Bumps [pwasm-utils](https://github.com/paritytech/wasm-utils) from 0.17.1 to 0.18.0.
- [Release notes](https://github.com/paritytech/wasm-utils/releases)
- [Commits](https://github.com/paritytech/wasm-utils/commits)

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

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

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)

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

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

* Update changelog

* Bump version

Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.14 to 0.3.15.
- [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/0.3.14...0.3.15)

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

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

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)

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

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

Bumps [regex](https://github.com/rust-lang/regex) from 1.4.5 to 1.4.6.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/regex/compare/1.4.5...1.4.6)

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

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

Bumps [pwasm-utils](https://github.com/paritytech/wasm-utils) from 0.17.0 to 0.17.1.
- [Release notes](https://github.com/paritytech/wasm-utils/releases)
- [Commits](https://github.com/paritytech/wasm-utils/commits)

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

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

* Update changelog

* Bump version

* Add #260 to changelog

Bumps [zip](https://github.com/zip-rs/zip) from 0.5.11 to 0.5.12.
- [Release notes](https://github.com/zip-rs/zip/releases)
- [Commits](https://github.com/zip-rs/zip/compare/v0.5.11...v0.5.12)

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

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

* Remove `funty` pin

* Remove unused `binaryen` dependency

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)

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

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

Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.13 to 0.3.14.
- [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/0.3.13...0.3.14)

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

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

* Update changelog

* Bump version

* add git commit hash in cargo-contract version

* remove todo and add version for `cargo contract` command

* It seems that I misunderstand the requirements. recover the old modify

* remove `pub`

* Bump versions

* Update changelog

* Apply suggestions from code review

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

* Remove empty section

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

Bumps [regex](https://github.com/rust-lang/regex) from 1.4.2 to 1.4.5.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/regex/compare/1.4.2...1.4.5)

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

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

* Improve `wasm-opt` not found error message

* Improve error message + check `wasm-opt` compatibility

* Use `regex` for parsing `wasm-opt --version`

* Apply suggestions from code review

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

* Implement comments

* Apply cargo fmt

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

Bumps [which](https://github.com/harryfei/which-rs) from 4.0.2 to 4.1.0.
- [Release notes](https://github.com/harryfei/which-rs/releases)
- [Commits](https://github.com/harryfei/which-rs/compare/4.0.2...4.1.0)

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

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

Bumps [anyhow](https://github.com/dtolnay/anyhow) from 1.0.39 to 1.0.40.
- [Release notes](https://github.com/dtolnay/anyhow/releases)
- [Commits](https://github.com/dtolnay/anyhow/compare/1.0.39...1.0.40)

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

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

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.124 to 1.0.125.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.124...v1.0.125)

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

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

Bumps [walkdir](https://github.com/BurntSushi/walkdir) from 2.3.1 to 2.3.2.
- [Release notes](https://github.com/BurntSushi/walkdir/releases)
- [Commits](https://github.com/BurntSushi/walkdir/compare/2.3.1...2.3.2)

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

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