suppress warnings (#92)

episodes/06-biological-sequences.Rmd

@@ -119,7 +119,7 @@ information is provided in the other package vignettes, accessible as
 
 To get started, we load the package.
 
-```{r, message=FALSE}
+```{r, message=FALSE, warning=FALSE}
 library(Biostrings)
 ```
 
@@ -406,7 +406,7 @@ available in other Bioconductor packages, as we demonstrate in the next section.
 
 To get started, we load the package.
 
-```{r, message=FALSE}
+```{r, message=FALSE, warning=FALSE}
 library(BSgenome)
 ```
 
@@ -437,7 +437,7 @@ BiocManager::install("BSgenome.Hsapiens.UCSC.hg38.masked")
 Once installed, BSgenome packages can be loaded like any other R package,
 using the `library()` function.
 
-```{r, message=FALSE}
+```{r, message=FALSE, warning=FALSE}
 library(BSgenome.Hsapiens.UCSC.hg38.masked)
 ```