Use -munittest instead of setup.py test to run tests

[yakky]

Description

The support for latter invocation method will be removed at some point from setuptools

References

Fix #29

Checklist

• Code lint checked via inv lint
• Tests added

[coveralls]

Pull Request Test Coverage Report for Build 1704768082

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 93.066%

---

Totals
Change from base Build 1704760408:	0.0%
Covered Lines:	190
Relevant Lines:	202

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 1375431920

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 93.091%

---

Totals
Change from base Build 1375331442:	0.5%
Covered Lines:	209
Relevant Lines:	221

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 1375431920

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 93.091%

---

Totals
Change from base Build 1375331442:	0.5%
Covered Lines:	209
Relevant Lines:	221

---

💛 - Coveralls