* Fix `#[warn(clippy::ptr_arg)]`

* Use either `binaryen-rs` dep or `wasm-opt` binary

* Implement reviewers suggestions

* Rename `optimization_level` to `optimization_passes`

* Revert "Rename `optimization_level` to `optimization_passes`"

This reverts commit 1fd35bcd.

* Update installation instructions

* Update readme

* Add package manager links

* Fix `#[warn(clippy::ptr_arg)]`

* Fix `#[warn(clippy::ptr_arg)]`

* Fix `#[warn(clippy::match_like_matches_macro)]`

* Fix `#[warn(clippy::type_complexity)]`

* Print warning to stderr

* Suppress output on `--quiet`

* Refactor conditional printing

* Update to scale-info 0.5 and codec 2.0

* Upgrade template to new codec

Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.11 to 0.3.12.
- [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/0.3.11...0.3.12)

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

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Bumps [log](https://github.com/rust-lang/log) from 0.4.13 to 0.4.14.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/log/compare/0.4.13...0.4.14)

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

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Bumps [serde](https://github.com/serde-rs/serde) from 1.0.122 to 1.0.123.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.122...v1.0.123)

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

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Bumps [serde](https://github.com/serde-rs/serde) from 1.0.120 to 1.0.122.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.120...v1.0.122)

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

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* Do not generate artifacts under `target` for `contract check`

* Add test

* Use `cargo check` for `contract check`

* Replace `if` with `assert`

* Shorten code

* Minor code improvs

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.119 to 1.0.120.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.119...v1.0.120)

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

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Bumps [cargo_metadata](https://github.com/oli-obk/cargo_metadata) from 0.12.2 to 0.12.3.
- [Release notes](https://github.com/oli-obk/cargo_metadata/releases)
- [Commits](https://github.com/oli-obk/cargo_metadata/compare/v0.12.2...v0.12.3)

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

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Bumps [rustc_version](https://github.com/Kimundi/rustc-version-rs) from 0.3.2 to 0.3.3.
- [Release notes](https://github.com/Kimundi/rustc-version-rs/releases)
- [Commits](https://github.com/Kimundi/rustc-version-rs/compare/v0.3.2...v0.3.3)

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

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Bumps [async-std](https://github.com/async-rs/async-std) from 1.8.0 to 1.9.0.
- [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/v1.8.0...v1.9.0)

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

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Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.9 to 0.3.11.
- [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/0.3.9...0.3.11)

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

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Bumps [serde](https://github.com/serde-rs/serde) from 1.0.118 to 1.0.119.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.118...v1.0.119)

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

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Bumps [sp-core](https://github.com/paritytech/substrate) from 2.0.0 to 2.0.1.
- [Release notes](https://github.com/paritytech/substrate/releases)
- [Changelog](https://github.com/paritytech/substrate/blob/master/docs/CHANGELOG.md)
- [Commits](https://github.com/paritytech/substrate/compare/v2.0.0...v2.0.1)

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

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Bumps [rustc_version](https://github.com/Kimundi/rustc-version-rs) from 0.3.0 to 0.3.2.
- [Release notes](https://github.com/Kimundi/rustc-version-rs/releases)
- [Commits](https://github.com/Kimundi/rustc-version-rs/compare/v0.3.0...v0.3.2)

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

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

Bumps [log](https://github.com/rust-lang/log) from 0.4.11 to 0.4.13.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/log/compare/0.4.11...0.4.13)

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

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Bumps [tempfile](https://github.com/Stebalien/tempfile) from 3.1.0 to 3.2.0.
- [Release notes](https://github.com/Stebalien/tempfile/releases)
- [Changelog](https://github.com/Stebalien/tempfile/blob/master/NEWS)
- [Commits](https://github.com/Stebalien/tempfile/commits)

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

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Bumps [cargo_metadata](https://github.com/oli-obk/cargo_metadata) from 0.12.1 to 0.12.2.
- [Release notes](https://github.com/oli-obk/cargo_metadata/releases)
- [Commits](https://github.com/oli-obk/cargo_metadata/compare/v0.12.1...v0.12.2)

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

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Bumps [anyhow](https://github.com/dtolnay/anyhow) from 1.0.37 to 1.0.38.
- [Release notes](https://github.com/dtolnay/anyhow/releases)
- [Commits](https://github.com/dtolnay/anyhow/compare/1.0.37...1.0.38)

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 0.3.8 to 0.3.9.
- [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/0.3.8...0.3.9)

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

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Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.60 to 1.0.61.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.60...v1.0.61)

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

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Bumps [anyhow](https://github.com/dtolnay/anyhow) from 1.0.35 to 1.0.37.
- [Release notes](https://github.com/dtolnay/anyhow/releases)
- [Commits](https://github.com/dtolnay/anyhow/compare/1.0.35...1.0.37)

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

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Bumps [heck](https://github.com/withoutboats/heck) from 0.3.1 to 0.3.2.
- [Release notes](https://github.com/withoutboats/heck/releases)
- [Commits](https://github.com/withoutboats/heck/commits)

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

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Bumps [toml](https://github.com/alexcrichton/toml-rs) from 0.5.7 to 0.5.8.
- [Release notes](https://github.com/alexcrichton/toml-rs/releases)
- [Commits](https://github.com/alexcrichton/toml-rs/compare/0.5.7...0.5.8)

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

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* Put build artifacts under `target/ink/`

* Add test

* Add new `target_directory` field on metadata struct

* Remove unnecessary `push`

* Remove redundant binding

Bumps [pwasm-utils](https://github.com/paritytech/wasm-utils) from 0.16.1 to 0.17.0.
- [Release notes](https://github.com/paritytech/wasm-utils/releases)
- [Commits](https://github.com/paritytech/wasm-utils/commits)

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

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Bumps [async-std](https://github.com/async-rs/async-std) from 1.7.0 to 1.8.0.
- [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/v1.7.0...v1.8.0)

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* Update dependencies

* Update readme

* Update README.md

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

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