[dotNetRDF-develop] VirtuosoManager IsolationLevel

[Alexander S. <ale...@gm...>]

Hello!

I like how transactions are integrated into VirtuosoManager. But although
current implementation suits for usual cases (as default IsolationLevel is
ReadCommitted), I think it would be better to make one more Open method
overload with IsolationLevel parameter.

Regards,
Alexander