Changelog

Refactored how the glue() environment was captured so that string interpolation is more robust when attempted in unique environments (for example inside function calls) (#26)

Calling the cairo_pdf device now allows multiple plots to be written to the same file (#21)

Revert behavior where named list automatically uses the names for output file names #18
Fix typo in mrggsave:::output_file_sep() title

Breaking changes

The default separator when auto-constructing file names is changed from underscore to hyphen; this is a breaking change that will result in different output filenames if users were using tag #2
Use the unexported (but documented) function mrggsave:::output_file_sep() to globally change the output file separator character #12
The prefix argument to mrggsave_common() now defaults to NULL; the Source graphic: annotation defaults to only showing the base file name of the plot

If a named list of plots is passed (checked via rlang::is_named), use_names will be set to TRUE and names used for output filename #8
Passing a list of plots generated by named_plots will set use_names to TRUE and the names will be use for output file names #8
When a named list of plots is passed, the names are adjusted to remove spaces, periods and underscores when creating the output file stem; these characters are replaced with hyphens #8
mrggsave_common() now has a labeller argument; pass a function to create the annotation for the plot; pass NULL to save a plot with no annotation #8
named_plots() gains an argument called add_context; when TRUE, the context (usually the script name) will be pre-pended to the output file name; this argument is FALSE by default #8
Add option called mrggsave.file.tolower which, if set to TRUE will pass the file stem through base::tolower(), making it all lower case, regardless of how the stem was generated #8
Add ability to save to multiple devices on one function call; pass a character vector of devices or a comma-separated string as dev

Add support for the following devices: pdf, png, tiff, jpeg, eps, ps, bmp, svg (#13)
Add ability to save last plot when it was created with ggplot2 (see the mrggsave_last function); this gets the last plot via ggplot2::last_plot (#12)
Add ability to save a named list of plots; when the list is named and the use_names argument is invoked, plots will get written out to their own file names (#14)
Add method for handing ggsurvplot objects (#11)
Pass the file name through glue::glue once it is formed from either stem or tag (e.g. stem = "dv_pred_{runnumber}") (#15)
Add named_plots function to generate plot names (and eventually file names) from the code used to generate the plot (#14)
Add non-exported context function to set the output file name when using tag argument; context is set and is in effect via option until the context is changed or reset; use context_clear
Removed support for objects created with patchwork

Added ncol as a formal argument; when ncol > 1, we set arrange to TRUE
Added mrggpage function as a wrapper around gridExtra::arrangeGrob
Added mrggsave_list, which takes in a list of objects that are ready to label and to save without arrangement
Changed mrggdraw so that all it does is draw a plot or plots, possibly after arranging
mrggdraw now returns processed plots invisibly so that they may be passed into mrggsave
Added internal generic mrggsave_prep_object and methods so that plots of different types can be passed directly to mrggsave_common
Added mrggsave.gList for saving gList objects
When tag or stem are given as a vector, the vector is collapsed using _ as a separator first prior to forming any output file names
When a file name is formed from tag, a _ separator is automatically placed between script and the (possibly collapsed) tag value
Added support for gtable objects
Added a default mrggsave method that assumes the object is a grob
Added argument to mrggpage to allow a list of plots to be arranged across multiple pages; added methods for handling arrangelist objects coming out of gridExtra::marrangeGrob