Hello

I would like to drop dev-dotnet/db4o maintainership

The reasons for this are that I don't use it, don't know how to test it 
and it needs some additional work to bump to recent versions (bug #234846).

Feel free to take it if you want and, if you prefer to take any other
"dotnet" package, please contact us ;-)

Or even better, if you want to join dotnet team... thanks a lot ;-)