inequantiles 0.1.0

• Initial CRAN submission.
• Functions for weighted quantile estimation (csquantile()).
• Quantile-based inequality indicators: quantile ratio index (qri()), share ratio (share_ratio()), percentile ratios (ratio_quantiles()), all indicators and their standard error (inequantiles()).
• Influence functions for linearization of indicators (*if_ functions)
• Rescaled bootstrap for complex survey designs (rescaled_bootstrap()).
• Functions and indicators for grouped data (quantiles, QRI, Gini - *_grouped() functions)
• Survey synthetic data (synthouse)