userGuide: reformat examples toward end
Change indentation of R code to 4 spaces (instead of 2)
inst/tests: change indentation of R code, 2 -> 4 spaces
panelutil: revise indentation
update version and date
fix typo in userGuide
change indentation, 2->4, in most of the charts
indentation of other charts 2->4
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cichart panel: indentation 2 -> 4
curvechart panel: indentation 2 -> 4
dotchart panel: indentation 2 -> 4
heatmap panel: indentation 2 -> 4
lodchart panel: indentation 2 -> 4
a bit more indentation in lodchart panel
lodheatmap panel: indentation 2 -> 4
mapchart panel: indentation 2 -> 4
scatterplot panel: indentation 2 -> 4
Rmarkdown.Rmd: small changes to indentation