Find a testing library other than bats

[AndreiUlmeyda]

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[AndreiUlmeyda]

After going over every last bash testing frameworklet I could find for the 10th time I decided to stop looking. Mocking not being approximately comfortably achievable or being unreliable is the deal breaker here for all of them. Tests modifying bookmarks would, in case of mistakes, run against the real buku db and momma raised me better than that.

Let the lack of tests stand as a reminder that the project should not grow substantially bigger without switching to a more appropriate language anyway.