Use `StaticArraysCore.jl` instead of `StaticArrays`

[MicheleCeresoli]

Closes #40

[codecov[bot]]

Codecov Report

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

Comparison is base (9ea68e3) 97.93% compared to head (14aa4aa) 97.93%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #41 +/- ## ======================================= Coverage 97.93% 97.93% ======================================= Files 26 26 Lines 2465 2466 +1 ======================================= + Hits 2414 2415 +1 Misses 51 51 ```

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