Inconsistent argument names

[krlmlr]

dbBind(params) vs. dbGetQuery(param).

Better to fix in DBI, extend all to params (or shorten to param) and give a warning if param is used.

Also: conn vs. con .

• param vs. params
• conn vs. con
• n vs. max_rows

[krlmlr]

Maybe just permit both names, to avoid confusion?

https://stackoverflow.com/q/55107679/946850

[krlmlr]

No param arguments found, only in examples. Updating.

[krlmlr]

Done here, con -> conn is a larger thing.