Update pair string problem.

[ilshookim]

Hello,

sqlcool-4.1.0 has some SQL update problem.
insert query is not correct.

so you need to change the code:
https://github.com/synw/sqlcool/blob/master/lib/src/database.dart
458 line:
pairs = "$pairs, ";
===>
pairs = ", ";

Thank you.

[synw]

Fixed in 4.1.1

@ilshookim thank you for the report. It is strange that the tests did not catch this: I'll investigate to try to make better tests.

I was thinking about extracting the query construction logic to a dedicated function, it should be more testable and clean