chore: Go version bump and other maintenance chores (#46)

- Introduce a Makefile for easier consistent usage of tools (mainly the
  linter) locally and in CI
- Add an `Assert` (no `f` suffix), since `go vet` has started
  complaining about that.
- Bump project Go version
- Bump GitHub actions versions
- Address new lint violations

fix: Unordered arrays of objects with PRESENCE fix (#40)

Add support for unordered arrays (#30)

* feat: Add support for unordered arrays

- Use the "<<UNORDERED>>" directive as the first string in the unordered
  array to ignore ordering when comparing arrays.
- Adds unit tests for this new logic.
- Adds a big real-world payload integration test that should cover most
  of the features of this package in combination

* fix: Remove snippet of unreachable code

* docs: Explain <<UNORDERED>> in README

* docs: Explain <<UNORDERED>> in GoDocs

* docs: Add <<UNORDERED>> runnable example

* chore: Address self-review comments (#30)

Add support for unordered arrays (#30)

* feat: Add support for unordered arrays

- Use the "<<UNORDERED>>" directive as the first string in the unordered
  array to ignore ordering when comparing arrays.
- Adds unit tests for this new logic.
- Adds a big real-world payload integration test that should cover most
  of the features of this package in combination

* fix: Remove snippet of unreachable code

* docs: Explain <<UNORDERED>> in README

* docs: Explain <<UNORDERED>> in GoDocs

* docs: Add <<UNORDERED>> runnable example

* chore: Address self-review comments (#30)

docs: Document '%' in expectedJSON case (#28)

Merge pull request #17 from kinbiko/fix-line-numbers

Ignore stackframes from this package in assertions

Merge pull request #13 from kinbiko/examples

Add documentation examples

Merge pull request #10 from kinbiko/docs-improvements

Docs improvements

Merge pull request #7 from kinbiko/remove-travis-workaround

Remove travis workaround

Truth-ify the readme