I recently posted a new package to my github called ggtimeline, which uses ggplot2 to easily produce timeline charts.
When I was a defense analyst on the consulting team at Janes, I occasionally needed to create event timelines for presentations or reports.
I developed an R package to more easily interact with the Janes API, called janesR (available here).
It currently provides functions for querying 17 different endpoints and returning tibbles ready for analysis and/or joining with other data.