weightsByBin: Compute sampling weights for continues values by binning.
In ibn-salem/genepair: Functions to Analyse Pairs of Genomic Elements like Genes.

Compute sampling weights to sample from a population with osberved probabilities by binning.

1	weightsByBin(obs, population, breaks = 50)

`obs`	vector of observed values according to which the sampling should be done (e.g distances observed for paralog gene pairs).
`population`	vector of all values in the total population from which one wants to sample (e.g distances of all gene pairs)
`breaks`	breaks used for sampling resolution (see `breaks` argument in `hist` function).