Add R wrapper

LICENSE

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+MIT License
+
 Copyright (c) 2025 Matthew T. Pratola and John Yannotty
 
 Permission is hereby granted, free of charge, to any person obtaining a copy

Ropenbt/DESCRIPTION

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+Package: Ropenbt
+Type: Package
+Title: The Open Bayesian Trees Project
+Version: 1.2.0
+Date: 2026-07-09
+Authors@R: c(person('Matthew', 'Pratola', role=c('aut','cre','cph'),email='mpratola@iu.edu'))
+URL: http://www.github.com/bandframework/OpenBT
+Description: 
+    This R package provides an R interface to the OpenBT library of Bayesian Tree models (https://www.github.com/bandframework/OpenBT).  For more information and examples, refer to the README at the root of the OpenBT repository.
+License: MIT
+Depends: R (>= 2.10)
+Imports: data.table, zip, emoa, Hmisc
+Suggests: 
+SystemRequirements: 
+NeedsCompilation: no

Ropenbt/NAMESPACE

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+export(openbt)
+S3method(predict, openbt)
+export(vartivity.openbt)
+export(sobol.openbt)
+export(mopareto.openbt)
+export(openbt.save)
+export(openbt.load)
+export(makecuts.openbt)
+export(setvarcuts.openbt)
+export(calcMBD)
+export(calcRS)
+importFrom(stats,cor)
+importFrom("graphics", "boxplot", "par")
+importFrom("graphics", "abline", "lines", "plot", "points")
+importFrom("stats", "quantile", "sd","qqplot")
+importFrom("stats", "rnorm", "runif")
+importFrom("stats","dist")
+importFrom("utils","read.table")
+importFrom("stats","qnorm")
+importFrom("zip","unzip")
+importFrom("zip","zipr")
+importFrom("graphics","title")
+importFrom("graphics","rect")
+importFrom("grDevices","gray")
+importFrom("utils","combn")
+importFrom("Hmisc","wtd.mean")
+importFrom("Hmisc","wtd.var")
+importFrom("Hmisc","wtd.quantile")
+