Re-jigged the class implementation to get better support from roxygen2 and CRAN check(). Majority of public functions are documented (remaining are the CRUD functions)

NAMESPACE

@@ -2,3 +2,7 @@
 
 export(DBClient)
 export(DBConnection)
+import(R6)
+importFrom(R6,R6Class)
+importFrom(rlang,":=")
+importFrom(rlang,.data)