bump x.y.z version to even y prior to creation of RELEASE_3_19 branch

Author: jwokaty

DESCRIPTION

@@ -6,7 +6,7 @@ Description: `muscat` provides various methods and visualization tools
     aggregated “pseudobulk” data, as well as a flexible simulation platform 
     that mimics both single and multi-sample scRNA-seq data.
 Type: Package
-Version: 1.17.0
+Version: 1.18.0
 Depends: R (>= 4.3)
 Authors@R: c(
 	person("Helena L.", "Crowell",