update patch number in version

vincenzocoia · Nov 12, 2020 · 1d78764 · 1d78764
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diff --git a/.gitignore b/.gitignore
@@ -1,7 +1,4 @@
 .Rproj.user
 .Rhistory
 .RData
-.Ruserdata
-docs
-doc
-Meta
+.Ruserdata
diff --git a/DESCRIPTION b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: powers
 Type: Package
 Title: Convenient Computation of Powers
-Version: 0.2.0
+Version: 0.2.1
 Authors@R: 
     person("Vincenzo", 
            "Coia", 
@@ -20,6 +20,7 @@ Suggests:
     rmarkdown,
     covr
 Imports: 
-    purrr
+    purrr,
+    rlang
 VignetteBuilder: knitr
 Depends: R(>= 2.10.0)
diff --git a/Meta/vignette.rds b/Meta/vignette.rds
diff --git a/NEWS.md b/NEWS.md
@@ -1,3 +1,8 @@
+# powers 0.2.1
+
+* More informative error messages given.
+* Functions now deliberately break when inputting a list of logicals. 
+
 # powers 0.2.0
 
 * Functions now have compatibility with lists.

diff --git a/doc/using_powers.R b/doc/using_powers.R
@@ -0,0 +1,11 @@
+## -----------------------------------------------------------------------------
+library(powers)
+
+## -----------------------------------------------------------------------------
+square(1:10)
+cube(1:10)
+reciprocal(1:10)
+
+## -----------------------------------------------------------------------------
+cube(list(1, 4, 5))
+
diff --git a/doc/using_powers.Rmd b/doc/using_powers.Rmd
@@ -0,0 +1,33 @@
+---
+title: "Using the `powers` package"
+author: "Vincenzo Coia"
+date: "`r Sys.Date()`"
+output: rmarkdown::html_vignette
+vignette: >
+  %\VignetteIndexEntry{Using the `powers` package}
+  %\VignetteEngine{knitr::rmarkdown}
+  %\VignetteEncoding{UTF-8}
+---
+
+__Note__: This package package is only meant for expository purposes -- although you might just find it handy!
+
+Want to compute powers without having to use `^` or `**`? Give `sqrt` some friends by loading the `powers` package! 
+
+```{r}
+library(powers)
+```
+
+Want squares, cubes, or reciprocals? Easy.
+
+```{r}
+square(1:10)
+cube(1:10)
+reciprocal(1:10)
+```
+
+List-friendly inputs, as well:
+
+```{r}
+cube(list(1, 4, 5))
+```
+