Removal of accented letters on cluster_gen is OS-dependent

[wleoncio]

This issue concerns the following code chunk:

lsasim/R/cluster_gen.R

Lines 184 to 187 in e398e1e

	# Removing accents ======================================================
	if (!is.null(names(n))) names(n) <- iconv(names(n), to = "ASCII//TRANSLIT")
	cluster_labels <- iconv(cluster_labels, to = "ASCII//TRANSLIT")
	resp_labels <- iconv(resp_labels, to = "ASCII//TRANSLIT")

It is intended to produce the following kind of output:

However, this seems to not be OS-agnostic. During the lsasim 2.1.0 release cycle, I was made aware that this works on Windows and mainstream Linux distributions, but Intel Macs and Solaris yield a different output. It was also noted that some Linux distributions such as Alpine (not tested by CRAN) do not even support "//TRANSLIT" at all.

It would be ideal if this feature was thus made more universal. Alternatively, it could be dropped, and accented letters would either be parsed directly or trigger a warning/error.