Merge pull request #365 from mixOmicsTeam/364-plotindiv-mint-bug

update examples to reflect how to plot specific studies with plotIndiv mint objects

add extra unit tests for plotIndiv on mint objects

fix bug in plotIndiv mint models

biplot random errors problem

fixed plot subtitles for rep.space = multi with chosen study

now makes plots when study is selected

patch fix for plotIndiv mint example running on cran check

change which bioc and r version to run in github action

install badger package in github action not in markdown

update README with latest changes and bioc release

update mixOmics version to reflect release version on bioconductor 3.21

version 6.31.5

Merge pull request #362 from mixOmicsTeam/345-ggplot-plotloadings

comment out tests which give margin errors