Add tests with Aqua.jl

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 96.54%. Comparing base (793d42e) to head (40c5e55).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #283 +/- ## ========================================== - Coverage 97.05% 96.54% -0.52% ========================================== Files 7 7 Lines 782 782 ========================================== - Hits 759 755 -4 - Misses 23 27 +4 ```

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[kimikage]

~I'm going to merge PR #278 first to pass the nightly build tests.~ Edit: Done!

[kimikage]

cf. https://discourse.julialang.org/t/adding-compat-entry-to-stdlib-breaks-tests-on-julia-1-3/105705

[kimikage]

Most of the CI errors seem to be due to Codecov's limitations of token-less upload. The cause of the julia-invalidations error ~has not been identified,~ but is unrelated to this PR.

[kimikage]

Thanks!

[hyrodium]

Thank you for maintaining this repository!

[kimikage]

The cause of the julia-invalidations error has not been identified, but is unrelated to this PR.

ERROR: Unsatisfiable requirements detected for package FlameGraphs [08572546]:
 FlameGraphs [08572546] log:
 ├─possible versions are: 0.1.0-1.0.0 or uninstalled
 ├─restricted by compatibility requirements with FixedPointNumbers [53c48c17] to versions: uninstalled
 │ └─FixedPointNumbers [53c48c17] log:
 │   ├─possible versions are: 0.9.0 or uninstalled
 │   └─FixedPointNumbers [53c48c17] is fixed to version 0.9.0-dev

🤣