correct use of const qualifier

[WorkerH]

There are some parts of the code where a const qualifier is missing. E.g.:

std::ostream & operator<<(std::ostream & os, Message & message)

Should be:

std::ostream & operator<<(std::ostream & os, const Message & message)

Due to this leads to errors if the caller trys to print a const Message&. E.g.:

void SomeClass::print_message() const
{
    std::cout << message_ << std::endl; // Error here, even thought this should be correct
}

[Tobias Lorenz]

Most of the operator<< overloads are not exported, except for Network, so the whole file. But you are right, the signature should be const. Fixed in https://bitbucket.org/tobylorenz/vector_dbc/commits/edf1195edad91bd806aa86b710ec3f9b28c70fc2

Thanks!

[Tobias Lorenz]

Fixed in https://bitbucket.org/tobylorenz/vector_dbc/commits/edf1195edad91bd806aa86b710ec3f9b28c70fc2