Speed up load time of the package by using [package extensions](https://pkgdocs.julialang.org/v1/creating-packages/#Conditional-loading-of-code-in-packages-(Extensions)). Candidates: `SparseArrays`, `FillArrays`, `PooledArrays`, `Accessors` Bonus: do the same in [`JsonGrinder.jl`](https://github.com/CTUAvastLab/JsonGrinder.jl).
Speed up load time of the package by using package extensions.
Candidates:
SparseArrays,FillArrays,PooledArrays,AccessorsBonus: do the same in
JsonGrinder.jl.