Fixed Added MySQL::is_optional; Fixed MySQL::Statement::bind() and MySQL::Statement::res_bind() so that it is UB-free; MySQL::Connection::query(), update() and prepare() now take several arguments and concatenate them into SQL string;
Fixed Added MySQL::is_optional;
Fixed MySQL::Statement::bind() and MySQL::Statement::res_bind() so that it is UB-free;
MySQL::Connection::query(), update() and prepare() now take several arguments and concatenate them into SQL string;

varqox/simlib,krzyk240/simlib,varqox/simlib,varqox/simlib,krzyk240/simlib,varqox/simlib