[BUG] Numerical Values Aren't Converted as Literals when Necessary

[ckatsulis]

Behavior

###Error:

> influx_select(con, "dbdata", measurement = "data", field_keys = "L1BP,L1BV,L1AP,L1AV", where = 'symbol::tag=\'tag/name\' and time >= now() - 2d', limit = 100000000)[[1]]
NULL
Warning message:
http: error parsing query: found 1e, expected integer at line 1, char 115 

No error: (notice L at the end of limit)

influx_select(con, "dbdata", measurement = "data", field_keys = "L1BP,L1BV,L1AP,L1AV", where = 'symbol::tag=\'tag/name\' and time >= now() - 2d', limit = 100000000L)[[1]]

Suggested Fix

As you have done in other portions of the package, simply format items such as limit and slimit with:

### Current issue:
> format(123456789012345)
[1] "1.234568e+14"
### Desired result:
> format(123456789012345,scientific = FALSE)
[1] "123456789012345"

[ckatsulis]

Thx 👍