implement cache

[codecov[bot]]

Codecov Report

Patch coverage: 92.45% and project coverage change: +0.75 :tada:

Comparison is base (334b21f) 93.48% compared to head (65db890) 94.24%.

:exclamation: Current head 65db890 differs from pull request most recent head c652d4c. Consider uploading reports for the commit c652d4c to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #53 +/- ## ========================================== + Coverage 93.48% 94.24% +0.75% ========================================== Files 9 10 +1 Lines 353 382 +29 ========================================== + Hits 330 360 +30 + Misses 23 22 -1 ``` | Flag | Coverage Δ | | |---|---|---| | unittests | `94.24% <92.45%> (+0.75%)` | :arrow_up: | 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=sigma67#carryforward-flags-in-the-pull-request-comment) to find out more. | [Impacted Files](https://app.codecov.io/gh/sigma67/spotify_to_ytmusic/pull/53?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sigma67) | Coverage Δ | | |---|---|---| | [spotify\_to\_ytmusic/controllers.py](https://app.codecov.io/gh/sigma67/spotify_to_ytmusic/pull/53?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sigma67#diff-c3BvdGlmeV90b195dG11c2ljL2NvbnRyb2xsZXJzLnB5) | `90.56% <0.00%> (ø)` | | | [spotify\_to\_ytmusic/settings.py](https://app.codecov.io/gh/sigma67/spotify_to_ytmusic/pull/53?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sigma67#diff-c3BvdGlmeV90b195dG11c2ljL3NldHRpbmdzLnB5) | `85.00% <0.00%> (ø)` | | | [spotify\_to\_ytmusic/ytmusic.py](https://app.codecov.io/gh/sigma67/spotify_to_ytmusic/pull/53?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sigma67#diff-c3BvdGlmeV90b195dG11c2ljL3l0bXVzaWMucHk=) | `92.64% <88.88%> (+2.02%)` | :arrow_up: | | [spotify\_to\_ytmusic/cache.py](https://app.codecov.io/gh/sigma67/spotify_to_ytmusic/pull/53?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sigma67#diff-c3BvdGlmeV90b195dG11c2ljL2NhY2hlLnB5) | `100.00% <100.00%> (ø)` | | | [tests/test\_cli.py](https://app.codecov.io/gh/sigma67/spotify_to_ytmusic/pull/53?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sigma67#diff-dGVzdHMvdGVzdF9jbGkucHk=) | `100.00% <100.00%> (ø)` | | | [tests/test\_spotipy.py](https://app.codecov.io/gh/sigma67/spotify_to_ytmusic/pull/53?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sigma67#diff-dGVzdHMvdGVzdF9zcG90aXB5LnB5) | `100.00% <100.00%> (ø)` | |

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