Hi,

Based on my understanding of documentation and code asmver and asmver_files always generate new AssemblyInfo.cs files. Although that approach results in clean new files often it's useful to update or add only couple lines to existing AssemblyInfo.cs.

When facing this task I usually have to write custom code instead of using standard Albacore tasks. I was wondering if it would make sense to add a new task or extend asmver/asmver_files to support this scenario.

I would be glad to work on implementation if such feature fits high-level vision of the library.