Bump version to 0.6.0

[codecov[bot]]

Codecov Report

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

Project coverage is 71.21%. Comparing base (1389991) to head (a75107c). Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #77 +/- ## ========================================== + Coverage 70.24% 71.21% +0.97% ========================================== Files 6 6 Lines 820 820 Branches 195 190 -5 ========================================== + Hits 576 584 +8 + Misses 135 127 -8 Partials 109 109 ``` | [Flag](https://app.codecov.io/gh/uutils/parse_datetime/pull/77/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uutils) | Coverage Δ | | |---|---|---| | [macos_latest](https://app.codecov.io/gh/uutils/parse_datetime/pull/77/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uutils) | `70.00% <ø> (+0.85%)` | :arrow_up: | | [ubuntu_latest](https://app.codecov.io/gh/uutils/parse_datetime/pull/77/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uutils) | `69.02% <ø> (+0.85%)` | :arrow_up: | | [windows_latest](https://app.codecov.io/gh/uutils/parse_datetime/pull/77/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=uutils) | `7.62% <ø> (ø)` | | 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=uutils#carryforward-flags-in-the-pull-request-comment) to find out more.

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