Changes:
* Update table suppression when totals are true for pivot table ([165](https://github.com/AI-SDC/ACRO/pull/165))
* Fix the problem of shape mismatch when there are two columns and the aggfunc is count or sum ([167](https://github.com/AI-SDC/ACRO/pull/167))
* Remove all files and folders created during testing ([168](https://github.com/AI-SDC/ACRO/pull/168))
* Create an example notebook with simple examples of acro ([170](https://github.com/AI-SDC/ACRO/pull/170))
* Add support for histogram ([176](https://github.com/AI-SDC/ACRO/pull/176))
* Add inherited members from acro_tables and acro_regression to the sphinx docs ([177](https://github.com/AI-SDC/ACRO/pull/177))
* Update the R help function ([178](https://github.com/AI-SDC/ACRO/pull/178))
* Update the finalise function by checking the provided folder name and ask for new one if it exists ([179](https://github.com/AI-SDC/ACRO/pull/179))
* Add histogram and survival analysis to R ([182](https://github.com/AI-SDC/ACRO/pull/182))