Bump version, update news, document, add unit test for add_image()

Author: cpsievert

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: plotly
 Title: Create Interactive Web Graphics via 'plotly.js'
-Version: 4.9.1
+Version: 4.9.1.9000
 Authors@R: c(person("Carson", "Sievert", role = c("aut", "cre"),
     email = "[email protected]", comment = c(ORCID = "0000-0002-4958-2844")),
     person("Chris", "Parmer", role = "aut",
@@ -72,6 +72,6 @@ Suggests:
     plotlyGeoAssets,
     forcats
 LazyData: true
-RoxygenNote: 6.1.1
+RoxygenNote: 7.0.2
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)

NAMESPACE

@@ -94,6 +94,7 @@ export(add_heatmap)
 export(add_histogram)
 export(add_histogram2d)
 export(add_histogram2dcontour)
+export(add_image)
 export(add_lines)
 export(add_markers)
 export(add_mesh)

NEWS.md

@@ -2,7 +2,11 @@
 
 ## Changes to plotly.js
 
-* This version of the R package upgrades the version of the underlying plotly.js library from v1.49.4 to v1.52.2. The [plotly.js release page](https://github.com/plotly/plotly.js/releases) has the full list of changes.
+* This version of the R package upgrades the version of the underlying plotly.js library from v1.49.4 to v1.52.2. This includes many bug fixes, improvements, as well as 2 new trace types: `treemap` and `image`. The [plotly.js release page](https://github.com/plotly/plotly.js/releases) has the full list of changes.
+
+## IMPROVEMENTS
+
+* The `add_image()` function was added to make it easier to create image traces via `raster` objects.
 
 ## BUG FIXES
 

inst/htmlwidgets/lib/setprototypeof/LICENSE

@@ -0,0 +1,15 @@
+The ISC License (ISC)
+
+Copyright (c) 2015, Wes Todd
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.