varPro 3.1.0

Breaking changes

importance() is now a true S3 generic rather than an alias-style front end.
partial.ivarpro() has been replaced by plot.ivarpro().
The supported user-facing interfaces for fitted objects are now the corresponding S3 generics, such as importance(), predict(), and plot().

Registered importance() methods for "varpro" and "uvarpro" objects.
Registered plot() methods for "ivarpro" and "partialpro" objects.
Continued support for class-specific predict() methods through standard S3 dispatch for "varpro", "uvarpro", "ivarpro", and "isopro" objects.

Help topics retain dotted method names such as plot.ivarpro, plot.partialpro, predict.ivarpro, predict.varpro, predict.uvarpro, and predict.isopro so that method pages remain easy to find in the reference manual and via ?topic.
Usage sections were updated to show S3 method signatures consistently, for example \method{plot}{ivarpro}(x, ...) and \method{predict}{ivarpro}(object, ...).
Examples were updated to use the generic forms plot(x, ...), predict(object, ...), and importance(object).
The iVarPro plotting documentation now uses data for the original feature matrix and documents target explicitly for multivariate and multiclass outputs.

Replace calls of the form partial.ivarpro(iv, var = ...) with plot(iv, var = ...).
Prefer importance(fit) over direct calls to importance.varpro(fit).
Prefer predict(fit, ...) over direct calls to predict.class(fit, ...).

Refactored varpro.strength() to reduce R-side post-processing overhead after the native varProStrength call, improving performance on large forests and large membership reconstructions.
Improved scalability and stability of varpro.strength(..., membership = TRUE) for very large analyses.
For RHF grow objects, varpro.strength() now uses the integrated hazard exposure values stored on the fitted object (int.haz.oob) as the default working response when available.
Internal cleanup of native-output decoding and membership reconstruction logic.

Fixed a failure that could occur on very large analyses when rebuilding membership lists in R after native execution, which could previously surface as an integer-overflow warning from cumsum() followed by a downstream missing-value error in membership reconstruction.

Major refactoring and enhancement to functions downstream from the entry varpro() function.

Improved ivarPro.
Refactored code to improve speed.
Eliminated or replaced mclapply() with PSOCK-based parallel execution, improving Windows compatibility.