break ground on apply family lesson
add split-apply-combine discussion to intro
nearing the end of the applyfam part 1
some more updates to applyfam part 1
more updates to loop functions pt 1
change lesson name
wrap up first apply fam lesson
change name of first apply fam lesson
some progress on second apply fam lesson
more progress on vapply and tapply lesson
mostly done with vapply and tapply lesson
add looking at data lesson
break ground on simulation lesson and update metas
more headway on simulation lesson
match_call custom test is working
fix bug in match_call custom test
a little more on simulation
match_call custom test now handles assignments
add more content to simulation
wrapping up simulation lesson