It might be a good idea to make a branch that targets Entity Framework Classic (https://github.com/zzzprojects/EntityFramework-Classic, https://www.nuget.org/packages/Z.EntityFramework.Classic) instead of Entity Framework 6 - the API surface is identical since EF Classic is a fork of EF6, but Classic targets .NET Core 2.0 and higher (I think it's netstandard2.0 but I might be wrong there) It basically only needs a change to the target framework and libraries used. Extra work to maintain though. Maybe use compiler directives instead?
It might be a good idea to make a branch that targets Entity Framework Classic (https://github.com/zzzprojects/EntityFramework-Classic, https://www.nuget.org/packages/Z.EntityFramework.Classic) instead of Entity Framework 6 - the API surface is identical since EF Classic is a fork of EF6, but Classic targets .NET Core 2.0 and higher (I think it's netstandard2.0 but I might be wrong there)
It basically only needs a change to the target framework and libraries used. Extra work to maintain though. Maybe use compiler directives instead?