Increment version number to 0.5.1

Author: DDorch

DESCRIPTION

@@ -1,7 +1,7 @@
 Type: Package
 Package: hubeau
 Title: Get Data from the French National Database on Water 'Hub'Eau'
-Version: 0.5.0.9000
+Version: 0.5.1
 Authors@R: c(
     person("David", "Dorchies", , "[email protected]", role = c("aut", "cre"),
            comment = c(ORCID = "0000-0002-6595-7984")),