Rollback to v3 and a suggestion about informing more on the merits of the many new features in v4.
I do appreciate all the work invested in the v4 new version but for me the v3 was just about what I needed and felt comfortable with. If I may so perhaps could be good to have a "read me" in the v4 version where it would be explained more the ways and means to use in the best way all and each of the new features, as well as to be explained what is the idea and the possible advantages on using each of those new features. Anyway I thank you you very much for preserving and allowing to roll back to the v3 version. Thank you again for all the great work and good wishes.