show duplicates on non-unique query

[veni-vidi-vici-dormivi]

Closes #59

[codecov[bot]]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (09d212b) 88.05% compared to head (5bf1f98) 87.36%. Report is 2 commits behind head on main.

Files	Patch %	Lines
filefinder/_filefinder.py	0.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #73 +/- ## ========================================== - Coverage 88.05% 87.36% -0.70% ========================================== Files 5 5 Lines 268 269 +1 ========================================== - Hits 236 235 -1 - Misses 32 34 +2 ``` | [Flag](https://app.codecov.io/gh/mathause/filefinder/pull/73/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Mathias+Hauser) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/mathause/filefinder/pull/73/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Mathias+Hauser) | `87.36% <0.00%> (-0.70%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Mathias+Hauser#carryforward-flags-in-the-pull-request-comment) to find out more.

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[mathause]

Thanks!