Replace logo.png by logo.svg (#239)

# Pull Request

Replace the logo.png by logo.svg to reduce the package size (1.92Mb to
8Kb for the logo).

Apparently the new logo is not picked up by roxygen2 to be shown on
rlistings-package.Rd.
In addition, rendering the README to pick the new logo also caused some
new messages to be displayed.

Fixes insightsengineering/nestdevs-tasks#93

README.Rmd

@@ -16,7 +16,7 @@ knitr::opts_chunk$set(
 )
 ```
 
-# rlistings <a href='https://github.com/insightsengineering/rlistings'><img src="man/figures/logo.png" align="right" height="200" width="200"/></a>
+# rlistings <a href='https://github.com/insightsengineering/rlistings'><img src="man/figures/logo.svg" align="right" height="200" width="200"/></a>
 
 <!-- start badges -->
 

README.md

@@ -1,7 +1,7 @@
 
 <!-- README.md is generated from README.Rmd. Please edit that file -->
 
-# rlistings <a href='https://github.com/insightsengineering/rlistings'><img src="man/figures/logo.png" align="right" height="200" width="200"/></a>
+# rlistings <a href='https://github.com/insightsengineering/rlistings'><img src="man/figures/logo.svg" align="right" height="200" width="200"/></a>
 
 <!-- start badges -->
 
@@ -98,6 +98,13 @@ The following example shows a simple listing and its printed output.
 
 ``` r
 library(rlistings)
+#> Loading required package: formatters
+#> 
+#> Attaching package: 'formatters'
+#> The following object is masked from 'package:base':
+#> 
+#>     %||%
+#> Loading required package: tibble
 
 # Reducing the data
 mtcars_ex <- mtcars %>% dplyr::mutate("car" = rownames(mtcars))
@@ -106,7 +113,6 @@ as_listing(mtcars_ex,
   key_cols = c("gear", "carb"),
   disp_cols = c("gear", "carb", "qsec", "car")
 ) %>% head()
-#> sorting incoming data by key columns
 #> gear   carb   qsec           car       
 #> ———————————————————————————————————————
 #>  3      1     19.44    Hornet 4 Drive