pull from upstream

Merge branch 'master' of git.bioconductor.org:packages/tidySingleCellExperiment

Conflicts:
	DESCRIPTION

Author: stemangiola

DESCRIPTION

@@ -1,7 +1,7 @@
 Type: Package
 Package: tidySingleCellExperiment
 Title: Brings SingleCellExperiment to the Tidyverse 
-Version: 1.7.5
+Version: 1.9.1
 Authors@R: c(person("Stefano", "Mangiola", email = "[email protected]",
                   role = c("aut", "cre")) )
 Description: tidySingleCellExperiment is an adapter that abstracts the 'SingleCellExperiment' container