added \mjteqn
and \mjtdeqn
macros (triple-argument versions)
added preview_rd()
function
environment variable MATHJAXR_CDN
can now be used to specify an alternative URL for a CDN
changed name of environment variable from MATHJAXR.USECDN
to MATHJAXR_USECDN
expanded information provided under ‘Issues’
first version released on CRAN
simplified ifelse
logic for the \mjeqn
and \mjdeqn
macros
added \mjseqn
and \mjsdeqn
macros (single-argument versions)