BasePlugin move from 4.1 to 4.2

BasePlugin has moved from Nop.Core.Plugins to Nop.Services.Plugins

I began writing a plugin last year using 4.1. By the time I picked it back up, 4.2 was available, so I installed that and continued the development using latest nopCommerce.
The only difference in the code now is the change in USING statement to accommodate above change.

This means maintaining two projects when further development is required.

Does anyone know of a clever way around this?

Many thanks in advance.
Paul

You can use a source control tool.  Branch and merge.

Thanks New York

I've set up a GitHub account and downloaded the VS Extension. Now to look into best way of setting this up.