v3.1.0 patch

[vutran1710]

• [x] Allow to pass Duration as max-delay value
• [x] Allow to pass rates directly to Limiter and init InMemoryBucket as default bucket

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01% :tada:

Comparison is base (6832bf6) 98.35% compared to head (48b8ec5) 98.37%.

:exclamation: Current head 48b8ec5 differs from pull request most recent head 8bc1514. Consider uploading reports for the commit 8bc1514 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #124 +/- ## ========================================== + Coverage 98.35% 98.37% +0.01% ========================================== Files 13 13 Lines 670 677 +7 Branches 78 80 +2 ========================================== + Hits 659 666 +7 Misses 6 6 Partials 5 5 ``` | [Files Changed](https://app.codecov.io/gh/vutran1710/PyrateLimiter/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Vu+Tran) | Coverage Δ | | |---|---|---| | [pyrate\_limiter/abstracts/rate.py](https://app.codecov.io/gh/vutran1710/PyrateLimiter/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Vu+Tran#diff-cHlyYXRlX2xpbWl0ZXIvYWJzdHJhY3RzL3JhdGUucHk=) | `100.00% <100.00%> (ø)` | | | [pyrate\_limiter/limiter.py](https://app.codecov.io/gh/vutran1710/PyrateLimiter/pull/124?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Vu+Tran#diff-cHlyYXRlX2xpbWl0ZXIvbGltaXRlci5weQ==) | `97.64% <100.00%> (+0.04%)` | :arrow_up: |

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