add helper pkg to sandbox

sandbox/intmedlite/.Rbuildignore

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+^.*\.Rproj$
+^\.Rproj\.user$
+^Makefile$
+^README\.Rmd$
+^README\.html$
+^README-norefs\.Rmd$
+^README-refs\.bib$
+^README-.*\.png$
+^\.travis\.yml$
+^appveyor\.yml$
+^codecov\.yml$
+^_pkgdown\.yml$
+
+# Extra miscellaneous support files/directories.
+^cran-comments\.md$
+^CONTRIBUTING\.md$
+^sandbox$
+^docs$

sandbox/intmedlite/DESCRIPTION

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+Package: intmedlite
+Title: Stochastic Causal Mediation Analysis Under Intermediate Confounding
+Version: 0.0.1
+Authors@R: c(
+    person("Nima", "Hejazi", email = "nh@nimahejazi.org",
+           role = c("aut", "cre", "cph"),
+           comment = c(ORCID = "0000-0002-7127-2789")),
+    person("Iván", "Díaz", email = "ild2005@med.cornell.edu",
+           role = "aut",
+           comment = c(ORCID = "0000-0001-9056-2047"))
+  )
+Description: Prototype for nonparametric causal mediation analysis with
+    stochastic interventions under intermediate confounding.
+Depends: R (>= 3.2.0)
+Imports:
+    stats,
+    methods,
+    tibble,
+    stringr,
+    assertthat,
+    data.table,
+    origami,
+    sl3
+Suggests:
+    testthat,
+    knitr,
+    rmarkdown,
+    Rsolnp,
+    nnls,
+    hal9001
+Remotes:
+    github::tlverse/sl3@master
+License: GPL-3
+Encoding: UTF-8
+LazyData: true
+RoxygenNote: 7.1.0

sandbox/intmedlite/Makefile

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+check:
+	Rscript -e "devtools::check()"
+
+checkfast:
+	Rscript -e "devtools::check(build_args = '--no-build-vignettes')"
+
+test:
+	Rscript -e "devtools::test()"
+
+doc:
+	Rscript -e "devtools::document()"
+
+build:
+	Rscript -e "devtools::build()"
+
+buildfast:
+	Rscript -e "devtools::build(vignettes = FALSE)"
+
+style:
+	Rscript -e "styler::style_pkg()"

sandbox/intmedlite/NAMESPACE

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+# Generated by roxygen2: do not edit by hand
+
+import(data.table)
+import(origami)
+import(sl3)
+import(stats)
+import(stringr)
+import(tibble)
+importFrom(stats,coef)