v2.0.0
1) As previewed in v1.8.0, the predefined asymmetric :V{I#} commands are removed, replaced with :TabwinsVertical and :TabwinsHorizontal.  Thus all the Create_tab_{vh}*() commands are removed.

2) Addition of :Tabwins, establishing a plugin default to :TabwinsVertical

3) Lots of updates to comments, reflecting 1) & 2)
Merge branch 'master' of https://github.com/cesheridan/tabwins