SqLite is written in C SqLite therefore uses cstring
Don't bother with seq[char], just use cstring which Nim easily converts to
string
* * *
Why not copy what db_sqlite has done, and have your own `setupQuery()` which
calls SqLite's `prepare_v2()`
then you can
var stmt = setupQuery(db, query, args)
# now step thru the stmt to iterate thru rows of data
but don't let me stop you doing things the hard way
