tursopg: lacks support of the numeric type, causing decimal precision issues

tursopg has issues arising from representing real numbers in floating point. For instance

select 0.1+0.2=0.3;

returns 0 (meaning false) under tursopg [which agrees with sqlite behavior), but under posgresql this returns

?column?

t (1 row)

("t" meaning true) becasuse posgtgresql represent it as "numeric"

select pg_typeof(0.1);

pg_typeof

numeric (1 row)

which according to the documentation supports "user-specified precision, exact; up to 131072 digits before the decimal point; up to 16383 digits after the decimal point"

see https://www.postgresql.org/docs/current/datatype-numeric.html

[tursopg does not implemement the function pg_typof]

tursopg> select pg_typeof(0.1); Error: Parse error: no such function: pg_typeof

tested with: tursopg v0.8.0-pre.11