*`var.select.smd()`, `var.select.md()`, `var.relations()`, `var.relations.mfi()`: Made several improvements to developer experience:
*`create.forest` now defaults to `is.null(forest)`, so it will automatically be `TRUE` if no forest is provided, and `FALSE` otherwise.
*`x` is no longer required if `create.forest` is `FALSE`.
* (Internal) Inverted some nested guard clauses for readability.
# RFSurrogates 0.3.3
* Fixed `meanAdjAgree()` bug which caused mean adjusted agreement pairings to be set to NA incorrectly when `variables` was a subset or differently ordered than `candidates`.
