fix: compute skewness as g1 - #225

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@v4, actions/checkout@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

In the use of ‘head’

In the use of ‘head’

The import of ‘DataFrame.Model’ is redundant

In the use of ‘tail’

In the use of ‘head’

This binding for ‘df’ shadows the existing binding

This binding for ‘df’ shadows the existing binding

The import of ‘DataFrame.Model’ is redundant

In the use of ‘head’

In the use of ‘head’

The import of ‘foldl'’ from module ‘Data.List’ is redundant

In the use of ‘head’

The import of ‘foldl'’ from module ‘Data.List’ is redundant

The import of ‘foldl'’ from module ‘Data.List’ is redundant

The import of ‘foldl'’ from module ‘Data.List’ is redundant

The import of ‘Data.List’ is redundant

The import of ‘Data.List’ is redundant