allow_null entry now works when as_is = TRUE fixing the erroneous
implementation of the previous release. The check will now also only check
unclassed lists (i.e. where is.object(x) == FALSE) and will stop recursing
at this point.load_config() and list_config() gain an entry allow_null to control
whether NULL entries are permitted. If FALSE then a NULL entry will trigger
an error. This new argument defaults to TRUE for backwards compatibility.
Minor change to documentation example.
Vignette tweaks and change of underlying vignette engine back to litedown.
load_config() (and consequently list_config()) gain an argument, strict.
If TRUE (default and backwards compatible) then only the documented
subset of base R functions can be used within the configuration file.
If FALSE, the entire base namespace is made available (in particular, ::,
which allows other calling of other packages).load_config() with config = NULL.Added modifyList() to the functions available within the configuration file.
Added the ability to pull specific configuration values out of the returned
object when as_is = TRUE.
Added list_config(). This returns the names of all possible configurations
within a file.
Added file.path() to the functions available within the configuration file.
Improved documentation about injection functions in to the evaluation environment.
Added the following to the functions to be usable in the configuration file:
$, [ and [[$<-, [<- and [[<-Removed length() and seq_along() from functions available in the configuration
file.
Added the ability to injection functions in to the environment where the
configuration file will be available. This is done by allowing the user to
supply a list of crated functions (utilising carrier::crate()).