Bump version to 0.19.0, update `CHANGELOG.md`

Bump version to 0.18.0, update `CHANGELOG.md`

Bump version to 0.17.0, update `CHANGELOG.md`

Bump version to 0.16.0, update `CHANGELOG.md`

Bump version to 0.15.0, update `CHANGELOG.md` (swiftwasm#196)

* Bump version to 0.15.0, update `CHANGELOG.md`

* Apply suggestions from code review

Co-authored-by: Jed Fox <git@jedfox.com>
Co-authored-by: Yuta Saito <kateinoigakukun@gmail.com>

Bump version to 0.14.0, update `CHANGELOG.md` (swiftwasm#181)

New release is required to resolve TokamakUI/Tokamak#475.

I've also cleaned up formatting in `.ts` file and clarified version incompatibility error message.

Fix wording and formatting in `CHANGELOG.md`

Add tslib (swiftwasm#164)

According to (outdated) instructions from https://github.com/rollup/rollup-plugin-typescript#installation

Bump to v0.11.1, update `CHANGELOG.md` (swiftwasm#145)

Bump to v0.11.0, update `CHANGELOG.md` & `Example` (swiftwasm#143)

I had to remove SwiftWasm 5.3 and 5.4 from CI because OpenCombine/OpenCombine#225 is reproducible with all code, not just OpenCombine, with old toolchains when Xcode 13.1 is installed.

I've also updated `Example` code to try using `fetch` with `async`/`await` and a section with a simple guide for this to `README.md`

Node.js and npm dependencies together with webpack.js config in `Example` directory were also updated.

* Bump to v0.11.0, update `CHANGELOG.md` & `Example`

* Add simple `async`/`await` guide to `README.md`

* Use `wasm-5.5-SNAPSHOT-2021-11-20-a`

* Update `CHANGELOG.md`

* Update `.swift-version`

* Add acknowledgements to `CHANGELOG.md`